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Class   373INDUSTRIAL ELECTRIC HEATING FURNACES
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[List of Pre Grant Publications for class 373 subclass 1][List of Patents for class 373 subclass 1]1 PLURAL DIVERSE HEATING MEANS
[List of Pre Grant Publications for class 373 subclass 2][List of Patents for class 373 subclass 2]2 Subclass 2 indent level is 1 Arc
 [List of Pre Grant Publications for class 373 subclass 3][List of Patents for class 373 subclass 3]3 Subclass 3 indent level is 2 With resistance
 [List of Pre Grant Publications for class 373 subclass 4][List of Patents for class 373 subclass 4]4 Subclass 4 indent level is 2 With induction
[List of Pre Grant Publications for class 373 subclass 5][List of Patents for class 373 subclass 5]5 Subclass 5 indent level is 1 Resistance
 [List of Pre Grant Publications for class 373 subclass 6][List of Patents for class 373 subclass 6]6 Subclass 6 indent level is 2 With induction
 [List of Pre Grant Publications for class 373 subclass 7][List of Patents for class 373 subclass 7]7 Subclass 7 indent level is 1 Induction
[List of Pre Grant Publications for class 373 subclass 8][List of Patents for class 373 subclass 8]8 ENVIRONMENTAL CONTROL
 [List of Pre Grant Publications for class 373 subclass 9][List of Patents for class 373 subclass 9]9 Subclass 9 indent level is 1 Arc furnace
[List of Pre Grant Publications for class 373 subclass 10][List of Patents for class 373 subclass 10]10 ELECTRON BEAM FURNACE DEVICE
[List of Pre Grant Publications for class 373 subclass 11][List of Patents for class 373 subclass 11]11 Subclass 11 indent level is 1 Vaporizing furnace
 [List of Pre Grant Publications for class 373 subclass 12][List of Patents for class 373 subclass 12]12 Subclass 12 indent level is 2 Power supply and control circuit
[List of Pre Grant Publications for class 373 subclass 13][List of Patents for class 373 subclass 13]13 Subclass 13 indent level is 2 Gun assembly
 [List of Pre Grant Publications for class 373 subclass 15][List of Patents for class 373 subclass 15]15 Subclass 15 indent level is 1 Ingot remelting
 [List of Pre Grant Publications for class 373 subclass 16][List of Patents for class 373 subclass 16]16 Subclass 16 indent level is 1 With plural beam devices
 [List of Pre Grant Publications for class 373 subclass 17][List of Patents for class 373 subclass 17]17 Subclass 17 indent level is 1 Zone melting
[List of Pre Grant Publications for class 373 subclass 18][List of Patents for class 373 subclass 18]18 PLASMA FURNACE DEVICE
[List of Pre Grant Publications for class 373 subclass 19][List of Patents for class 373 subclass 19]19 Subclass 19 indent level is 1 Indirect heating
 [List of Pre Grant Publications for class 373 subclass 20][List of Patents for class 373 subclass 20]20 Subclass 20 indent level is 2 Rotary furnace
 [List of Pre Grant Publications for class 373 subclass 21][List of Patents for class 373 subclass 21]21 Subclass 21 indent level is 1 Remelting furnace (i.e., ingot remelting)
[List of Pre Grant Publications for class 373 subclass 22][List of Patents for class 373 subclass 22]22 Subclass 22 indent level is 1 Direct furnace (i.e., plasma flame impinges on the melt)
 [List of Pre Grant Publications for class 373 subclass 23][List of Patents for class 373 subclass 23]23 Subclass 23 indent level is 2 Expanded arc column
 [List of Pre Grant Publications for class 373 subclass 24][List of Patents for class 373 subclass 24]24 Subclass 24 indent level is 2 Sidewall mounted plasmatron
 [List of Pre Grant Publications for class 373 subclass 25][List of Patents for class 373 subclass 25]25 Subclass 25 indent level is 2 Control system
 [List of Pre Grant Publications for class 373 subclass 26][List of Patents for class 373 subclass 26]26 GLOW DISCHARGE FURNACE DEVICE
[List of Pre Grant Publications for class 373 subclass 27][List of Patents for class 373 subclass 27]27 GLASS FURNACE DEVICE
 [List of Pre Grant Publications for class 373 subclass 28][List of Patents for class 373 subclass 28]28 Subclass 28 indent level is 1 Filament discharge (i.e., bushing)
[List of Pre Grant Publications for class 373 subclass 29][List of Patents for class 373 subclass 29]29 Subclass 29 indent level is 1 Joule effect heating
[List of Pre Grant Publications for class 373 subclass 30][List of Patents for class 373 subclass 30]30 Subclass 30 indent level is 2 Furnace body detail
[List of Pre Grant Publications for class 373 subclass 33][List of Patents for class 373 subclass 33]33 Subclass 33 indent level is 2 Charging or discharging
[List of Pre Grant Publications for class 373 subclass 36][List of Patents for class 373 subclass 36]36 Subclass 36 indent level is 2 Electrode assembly
[List of Pre Grant Publications for class 373 subclass 39][List of Patents for class 373 subclass 39]39 Subclass 39 indent level is 2 Electrical system
[List of Pre Grant Publications for class 373 subclass 42][List of Patents for class 373 subclass 42]42 ELECTROSLAG REMELTING DEVICE
 [List of Pre Grant Publications for class 373 subclass 43][List of Patents for class 373 subclass 43]43 Subclass 43 indent level is 1 Plural furnace units
[List of Pre Grant Publications for class 373 subclass 44][List of Patents for class 373 subclass 44]44 Subclass 44 indent level is 1 Body detail
 [List of Pre Grant Publications for class 373 subclass 45][List of Patents for class 373 subclass 45]45 Subclass 45 indent level is 2 Crucible
 [List of Pre Grant Publications for class 373 subclass 46][List of Patents for class 373 subclass 46]46 Subclass 46 indent level is 1 Start-up
[List of Pre Grant Publications for class 373 subclass 47][List of Patents for class 373 subclass 47]47 Subclass 47 indent level is 1 Power supply system
 [List of Pre Grant Publications for class 373 subclass 48][List of Patents for class 373 subclass 48]48 Subclass 48 indent level is 2 Conductor arrangement
[List of Pre Grant Publications for class 373 subclass 49][List of Patents for class 373 subclass 49]49 Subclass 49 indent level is 2 Control
 [List of Pre Grant Publications for class 373 subclass 51][List of Patents for class 373 subclass 51]51 Subclass 51 indent level is 1 Electrode replacement
[List of Pre Grant Publications for class 373 subclass 52][List of Patents for class 373 subclass 52]52 Subclass 52 indent level is 1 Electrode support
 [List of Pre Grant Publications for class 373 subclass 53][List of Patents for class 373 subclass 53]53 Subclass 53 indent level is 2 Plural electrodes
[List of Pre Grant Publications for class 373 subclass 54][List of Patents for class 373 subclass 54]54 Subclass 54 indent level is 1 Electrode
 [List of Pre Grant Publications for class 373 subclass 55][List of Patents for class 373 subclass 55]55 Subclass 55 indent level is 2 With protective shield
[List of Pre Grant Publications for class 373 subclass 56][List of Patents for class 373 subclass 56]56 WITH CONDENSATING DEVICE
[List of Pre Grant Publications for class 373 subclass 57][List of Patents for class 373 subclass 57]57 Subclass 57 indent level is 1 Including resistance furnace detail
 [List of Pre Grant Publications for class 373 subclass 58][List of Patents for class 373 subclass 58]58 Subclass 58 indent level is 2 With open circuit (i.e., charge internal resistance heating)
 [List of Pre Grant Publications for class 373 subclass 59][List of Patents for class 373 subclass 59]59 Subclass 59 indent level is 1 Including induction furnace detail
[List of Pre Grant Publications for class 373 subclass 60][List of Patents for class 373 subclass 60]60 ARC FURNACE DEVICE
[List of Pre Grant Publications for class 373 subclass 61][List of Patents for class 373 subclass 61]61 Subclass 61 indent level is 1 Indirect
[List of Pre Grant Publications for class 373 subclass 62][List of Patents for class 373 subclass 62]62 Subclass 62 indent level is 2 Arc between spaced electrodes
 [List of Pre Grant Publications for class 373 subclass 65][List of Patents for class 373 subclass 65]65 Subclass 65 indent level is 2 Arc between electrode and crucible exterior
 [List of Pre Grant Publications for class 373 subclass 66][List of Patents for class 373 subclass 66]66 Subclass 66 indent level is 2 Combined with or convertible to direct arc furnace
[List of Pre Grant Publications for class 373 subclass 67][List of Patents for class 373 subclass 67]67 Subclass 67 indent level is 1 Ingot remelting
 [List of Pre Grant Publications for class 373 subclass 68][List of Patents for class 373 subclass 68]68 Subclass 68 indent level is 2 With internal atmosphere control (e.g., pressure, vacuum, etc.)
 [List of Pre Grant Publications for class 373 subclass 69][List of Patents for class 373 subclass 69]69 Subclass 69 indent level is 2 With electrode holder or guide
 [List of Pre Grant Publications for class 373 subclass 70][List of Patents for class 373 subclass 70]70 Subclass 70 indent level is 2 With power regulation
[List of Pre Grant Publications for class 373 subclass 71][List of Patents for class 373 subclass 71]71 Subclass 71 indent level is 1 Furnace body detail
 [List of Pre Grant Publications for class 373 subclass 72][List of Patents for class 373 subclass 72]72 Subclass 72 indent level is 2 Hearth or crucible
[List of Pre Grant Publications for class 373 subclass 73][List of Patents for class 373 subclass 73]73 Subclass 73 indent level is 2 Roof
[List of Pre Grant Publications for class 373 subclass 75][List of Patents for class 373 subclass 75]75 Subclass 75 indent level is 2 Sidewall
 [List of Pre Grant Publications for class 373 subclass 77][List of Patents for class 373 subclass 77]77 Subclass 77 indent level is 2 With internal atmosphere control (e.g., pressure, vacuum, etc.)
 [List of Pre Grant Publications for class 373 subclass 78][List of Patents for class 373 subclass 78]78 Subclass 78 indent level is 1 Plural furnace units
[List of Pre Grant Publications for class 373 subclass 79][List of Patents for class 373 subclass 79]79 Subclass 79 indent level is 1 Charging or discharging
 [List of Pre Grant Publications for class 373 subclass 80][List of Patents for class 373 subclass 80]80 Subclass 80 indent level is 2 With charge pre-heating
[List of Pre Grant Publications for class 373 subclass 81][List of Patents for class 373 subclass 81]81 Subclass 81 indent level is 2 Top charging
 [List of Pre Grant Publications for class 373 subclass 83][List of Patents for class 373 subclass 83]83 Subclass 83 indent level is 2 Bottom pour
 [List of Pre Grant Publications for class 373 subclass 84][List of Patents for class 373 subclass 84]84 Subclass 84 indent level is 2 Discharge by tilting
[List of Pre Grant Publications for class 373 subclass 85][List of Patents for class 373 subclass 85]85 Subclass 85 indent level is 1 For manipulation of the charge or melt (e.g., stirring)
 [List of Pre Grant Publications for class 373 subclass 86][List of Patents for class 373 subclass 86]86 Subclass 86 indent level is 2 Mechanical
 [List of Pre Grant Publications for class 373 subclass 87][List of Patents for class 373 subclass 87]87 Subclass 87 indent level is 2 Crust breaking device
[List of Pre Grant Publications for class 373 subclass 88][List of Patents for class 373 subclass 88]88 Subclass 88 indent level is 1 Electrode
 [List of Pre Grant Publications for class 373 subclass 89][List of Patents for class 373 subclass 89]89 Subclass 89 indent level is 2 Self-baking (i.e., Soderberg)
 [List of Pre Grant Publications for class 373 subclass 90][List of Patents for class 373 subclass 90]90 Subclass 90 indent level is 2 Non-consumable
[List of Pre Grant Publications for class 373 subclass 91][List of Patents for class 373 subclass 91]91 Subclass 91 indent level is 2 Sectional
 [List of Pre Grant Publications for class 373 subclass 93][List of Patents for class 373 subclass 93]93 Subclass 93 indent level is 2 Composite (e.g., water cooled body with carbon tip)
[List of Pre Grant Publications for class 373 subclass 94][List of Patents for class 373 subclass 94]94 Subclass 94 indent level is 1 Electrode support
 [List of Pre Grant Publications for class 373 subclass 95][List of Patents for class 373 subclass 95]95 Subclass 95 indent level is 2 Seal
 [List of Pre Grant Publications for class 373 subclass 96][List of Patents for class 373 subclass 96]96 Subclass 96 indent level is 2 With electrode shield
 [List of Pre Grant Publications for class 373 subclass 97][List of Patents for class 373 subclass 97]97 Subclass 97 indent level is 2 For Soderberg electrode (e.g., casing)
[List of Pre Grant Publications for class 373 subclass 98][List of Patents for class 373 subclass 98]98 Subclass 98 indent level is 2 Mast
 [List of Pre Grant Publications for class 373 subclass 100][List of Patents for class 373 subclass 100]100 Subclass 100 indent level is 2 Slipping holder
 [List of Pre Grant Publications for class 373 subclass 101][List of Patents for class 373 subclass 101]101 Subclass 101 indent level is 2 With electrical contact or terminal
[List of Pre Grant Publications for class 373 subclass 102][List of Patents for class 373 subclass 102]102 Subclass 102 indent level is 1 Power supply system
 [List of Pre Grant Publications for class 373 subclass 103][List of Patents for class 373 subclass 103]103 Subclass 103 indent level is 2 Cable or cable suspension arrangement
[List of Pre Grant Publications for class 373 subclass 104][List of Patents for class 373 subclass 104]104 Subclass 104 indent level is 2 With power regulation
 [List of Pre Grant Publications for class 373 subclass 107][List of Patents for class 373 subclass 107]107 Subclass 107 indent level is 2 With magnetically influenced arc
 [List of Pre Grant Publications for class 373 subclass 108][List of Patents for class 373 subclass 108]108 Subclass 108 indent level is 2 D.C. power
[List of Pre Grant Publications for class 373 subclass 109][List of Patents for class 373 subclass 109]109 RESISTANCE FURNACE DEVICE
[List of Pre Grant Publications for class 373 subclass 110][List of Patents for class 373 subclass 110]110 Subclass 110 indent level is 1 With internal atmosphere control (e.g., pressure, vacuum, etc.)
 [List of Pre Grant Publications for class 373 subclass 111][List of Patents for class 373 subclass 111]111 Subclass 111 indent level is 2 Having tubular charge containing or supporting element
 [List of Pre Grant Publications for class 373 subclass 112][List of Patents for class 373 subclass 112]112 Subclass 112 indent level is 2 Vacuum
[List of Pre Grant Publications for class 373 subclass 113][List of Patents for class 373 subclass 113]113 Subclass 113 indent level is 1 For cooling
 [List of Pre Grant Publications for class 373 subclass 114][List of Patents for class 373 subclass 114]114 Subclass 114 indent level is 2 Terminal
 [List of Pre Grant Publications for class 373 subclass 115][List of Patents for class 373 subclass 115]115 Subclass 115 indent level is 1 Charging or discharging
 [List of Pre Grant Publications for class 373 subclass 116][List of Patents for class 373 subclass 116]116 Subclass 116 indent level is 1 For manipulation of the charge or melt (e.g., stirring)
[List of Pre Grant Publications for class 373 subclass 117][List of Patents for class 373 subclass 117]117 Subclass 117 indent level is 1 With heating element detail
 [List of Pre Grant Publications for class 373 subclass 118][List of Patents for class 373 subclass 118]118 Subclass 118 indent level is 2 Resistance crucible
 [List of Pre Grant Publications for class 373 subclass 119][List of Patents for class 373 subclass 119]119 Subclass 119 indent level is 2 Wall contained
[List of Pre Grant Publications for class 373 subclass 120][List of Patents for class 373 subclass 120]120 Subclass 120 indent level is 2 Open circuit (e.g., charge internal resistance heating)
 [List of Pre Grant Publications for class 373 subclass 127][List of Patents for class 373 subclass 127]127 Subclass 127 indent level is 2 Having resistance encasement means
[List of Pre Grant Publications for class 373 subclass 128][List of Patents for class 373 subclass 128]128 Subclass 128 indent level is 2 Mounting
[List of Pre Grant Publications for class 373 subclass 132][List of Patents for class 373 subclass 132]132 Subclass 132 indent level is 2 Non-metallic resistor
 [List of Pre Grant Publications for class 373 subclass 134][List of Patents for class 373 subclass 134]134 Subclass 134 indent level is 2 Including resistor shape detail
[List of Pre Grant Publications for class 373 subclass 135][List of Patents for class 373 subclass 135]135 Subclass 135 indent level is 1 Control
 [List of Pre Grant Publications for class 373 subclass 136][List of Patents for class 373 subclass 136]136 Subclass 136 indent level is 2 Temperature
 [List of Pre Grant Publications for class 373 subclass 137][List of Patents for class 373 subclass 137]137 Subclass 137 indent level is 1 Lining
[List of Pre Grant Publications for class 373 subclass 138][List of Patents for class 373 subclass 138]138 INDUCTION FURNACE DEVICE
 [List of Pre Grant Publications for class 373 subclass 139][List of Patents for class 373 subclass 139]139 Subclass 139 indent level is 1 Zone melting
[List of Pre Grant Publications for class 373 subclass 140][List of Patents for class 373 subclass 140]140 Subclass 140 indent level is 1 With internal atmosphere control (e.g., pressure, vacuum, etc.)
 [List of Pre Grant Publications for class 373 subclass 141][List of Patents for class 373 subclass 141]141 Subclass 141 indent level is 2 Vacuum
[List of Pre Grant Publications for class 373 subclass 142][List of Patents for class 373 subclass 142]142 Subclass 142 indent level is 1 For charging or discharging
 [List of Pre Grant Publications for class 373 subclass 143][List of Patents for class 373 subclass 143]143 Subclass 143 indent level is 2 By tilting
 [List of Pre Grant Publications for class 373 subclass 144][List of Patents for class 373 subclass 144]144 Subclass 144 indent level is 1 Having plural heating elements
 [List of Pre Grant Publications for class 373 subclass 145][List of Patents for class 373 subclass 145]145 Subclass 145 indent level is 1 Having condition signaling means
 [List of Pre Grant Publications for class 373 subclass 146][List of Patents for class 373 subclass 146]146 Subclass 146 indent level is 1 With means for manipulation of the charge or melt (e.g., stirring)
[List of Pre Grant Publications for class 373 subclass 147][List of Patents for class 373 subclass 147]147 Subclass 147 indent level is 1 Power supply system
 [List of Pre Grant Publications for class 373 subclass 148][List of Patents for class 373 subclass 148]148 Subclass 148 indent level is 2 Regulating
[List of Pre Grant Publications for class 373 subclass 149][List of Patents for class 373 subclass 149]149 Subclass 149 indent level is 1 For furnace regulating
 [List of Pre Grant Publications for class 373 subclass 150][List of Patents for class 373 subclass 150]150 Subclass 150 indent level is 2 Electrical
[List of Pre Grant Publications for class 373 subclass 151][List of Patents for class 373 subclass 151]151 Subclass 151 indent level is 1 Coreless
[List of Pre Grant Publications for class 373 subclass 152][List of Patents for class 373 subclass 152]152 Subclass 152 indent level is 2 Coil
 [List of Pre Grant Publications for class 373 subclass 155][List of Patents for class 373 subclass 155]155 Subclass 155 indent level is 2 Lining
[List of Pre Grant Publications for class 373 subclass 156][List of Patents for class 373 subclass 156]156 Subclass 156 indent level is 2 Crucible
 [List of Pre Grant Publications for class 373 subclass 158][List of Patents for class 373 subclass 158]158 Subclass 158 indent level is 2 Cooling
[List of Pre Grant Publications for class 373 subclass 159][List of Patents for class 373 subclass 159]159 Subclass 159 indent level is 1 Core-type (i.e., channel)
 [List of Pre Grant Publications for class 373 subclass 160][List of Patents for class 373 subclass 160]160 Subclass 160 indent level is 2 Coil
[List of Pre Grant Publications for class 373 subclass 161][List of Patents for class 373 subclass 161]161 Subclass 161 indent level is 2 Channel
 [List of Pre Grant Publications for class 373 subclass 163][List of Patents for class 373 subclass 163]163 Subclass 163 indent level is 2 Crucible or hearth
 [List of Pre Grant Publications for class 373 subclass 164][List of Patents for class 373 subclass 164]164 Subclass 164 indent level is 2 Lining
 [List of Pre Grant Publications for class 373 subclass 165][List of Patents for class 373 subclass 165]165 Subclass 165 indent level is 2 Cooling
 [List of Pre Grant Publications for class 373 subclass 166][List of Patents for class 373 subclass 166]166 MISCELLANEOUS
 
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