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Classification Resources
 
Class   219ELECTRIC HEATING
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[List of Pre Grant Publications for class 219 subclass 600][List of Patents for class 219 subclass 600]600 INDUCTIVE HEATING
 [List of Pre Grant Publications for class 219 subclass 601][List of Patents for class 219 subclass 601]601 Subclass 601 indent level is 1 With diverse-type heating
[List of Pre Grant Publications for class 219 subclass 602][List of Patents for class 219 subclass 602]602 Subclass 602 indent level is 1 Metal working
[List of Pre Grant Publications for class 219 subclass 618][List of Patents for class 219 subclass 618]618 Subclass 618 indent level is 1 With heat exchange
[List of Pre Grant Publications for class 219 subclass 635][List of Patents for class 219 subclass 635]635 Subclass 635 indent level is 1 Specific heating application
[List of Pre Grant Publications for class 219 subclass 647][List of Patents for class 219 subclass 647]647 Subclass 647 indent level is 1 With workpiece support
[List of Pre Grant Publications for class 219 subclass 660][List of Patents for class 219 subclass 660]660 Subclass 660 indent level is 1 With power supply system
[List of Pre Grant Publications for class 219 subclass 672][List of Patents for class 219 subclass 672]672 Subclass 672 indent level is 1 Specific inductor configuration
[List of Pre Grant Publications for class 219 subclass 678][List of Patents for class 219 subclass 678]678 MICROWAVE HEATING
 [List of Pre Grant Publications for class 219 subclass 679][List of Patents for class 219 subclass 679]679 Subclass 679 indent level is 1 With diverse device
[List of Pre Grant Publications for class 219 subclass 680][List of Patents for class 219 subclass 680]680 Subclass 680 indent level is 1 With diverse-type heating
 [List of Pre Grant Publications for class 219 subclass 686][List of Patents for class 219 subclass 686]686 Subclass 686 indent level is 1 Gas environment (e.g., pressurized, etc.)
[List of Pre Grant Publications for class 219 subclass 687][List of Patents for class 219 subclass 687]687 Subclass 687 indent level is 1 Fluid heater
[List of Pre Grant Publications for class 219 subclass 690][List of Patents for class 219 subclass 690]690 Subclass 690 indent level is 1 Waveguide applicator
[List of Pre Grant Publications for class 219 subclass 698][List of Patents for class 219 subclass 698]698 Subclass 698 indent level is 1 Tunnel furnace
[List of Pre Grant Publications for class 219 subclass 702][List of Patents for class 219 subclass 702]702 Subclass 702 indent level is 1 With control system
[List of Pre Grant Publications for class 219 subclass 725][List of Patents for class 219 subclass 725]725 Subclass 725 indent level is 1 Cookware (e.g., vessel, utensil, etc.)
[List of Pre Grant Publications for class 219 subclass 736][List of Patents for class 219 subclass 736]736 Subclass 736 indent level is 1 Radiation protection
[List of Pre Grant Publications for class 219 subclass 745][List of Patents for class 219 subclass 745]745 Subclass 745 indent level is 1 Field modification
[List of Pre Grant Publications for class 219 subclass 756][List of Patents for class 219 subclass 756]756 Subclass 756 indent level is 1 Enclosed cavity structure
 [List of Pre Grant Publications for class 219 subclass 759][List of Patents for class 219 subclass 759]759 Subclass 759 indent level is 1 With heat exchange (e.g., susceptor, etc.)
 [List of Pre Grant Publications for class 219 subclass 760][List of Patents for class 219 subclass 760]760 Subclass 760 indent level is 1 With specific transformer
 [List of Pre Grant Publications for class 219 subclass 761][List of Patents for class 219 subclass 761]761 Subclass 761 indent level is 1 With specific generator
[List of Pre Grant Publications for class 219 subclass 762][List of Patents for class 219 subclass 762]762 Subclass 762 indent level is 1 Load support
[List of Pre Grant Publications for class 219 subclass 764][List of Patents for class 219 subclass 764]764 CAPACITIVE DIELECTRIC HEATING
[List of Pre Grant Publications for class 219 subclass 50][List of Patents for class 219 subclass 50]50 METAL HEATING (E.G., RESISTANCE HEATING)
[List of Pre Grant Publications for class 219 subclass 51][List of Patents for class 219 subclass 51]51 Subclass 51 indent level is 1 Chain
[List of Pre Grant Publications for class 219 subclass 53][List of Patents for class 219 subclass 53]53 Subclass 53 indent level is 1 Rail bond
[List of Pre Grant Publications for class 219 subclass 56][List of Patents for class 219 subclass 56]56 Subclass 56 indent level is 1 Wire, rod, or bar bonding
[List of Pre Grant Publications for class 219 subclass 59.1][List of Patents for class 219 subclass 59.1]59.1 Subclass 59.1 indent level is 1 Of cylinders (e.g., pipes and tubes)
[List of Pre Grant Publications for class 219 subclass 68][List of Patents for class 219 subclass 68]68 Subclass 68 indent level is 1 Cutting or disintegrating (e.g., machining engraving)
 [List of Pre Grant Publications for class 219 subclass 71][List of Patents for class 219 subclass 71]71 Subclass 71 indent level is 1 Liquid electrode
[List of Pre Grant Publications for class 219 subclass 72][List of Patents for class 219 subclass 72]72 Subclass 72 indent level is 1 Nonatmospheric environment at hot spot (e.g., resistance weld under oil, vacuum)
[List of Pre Grant Publications for class 219 subclass 76.1][List of Patents for class 219 subclass 76.1]76.1 Subclass 76.1 indent level is 1 For deposition welding (e.g., coating or building up)
[List of Pre Grant Publications for class 219 subclass 78.01][List of Patents for class 219 subclass 78.01]78.01 Subclass 78.01 indent level is 1 For bonding with pressure (e.g., resistance welding)
[List of Pre Grant Publications for class 219 subclass 85.1][List of Patents for class 219 subclass 85.1]85.1 Subclass 85.1 indent level is 2 Brazing or soldering
 [List of Pre Grant Publications for class 219 subclass 78.02][List of Patents for class 219 subclass 78.02]78.02 Subclass 78.02 indent level is 2 By solid-state bonding (e.g., diffusion)
[List of Pre Grant Publications for class 219 subclass 78.11][List of Patents for class 219 subclass 78.11]78.11 Subclass 78.11 indent level is 2 Honeycomb
 [List of Pre Grant Publications for class 219 subclass 78.13][List of Patents for class 219 subclass 78.13]78.13 Subclass 78.13 indent level is 2 With additional heating device
 [List of Pre Grant Publications for class 219 subclass 78.14][List of Patents for class 219 subclass 78.14]78.14 Subclass 78.14 indent level is 2 With work cleaning means
 [List of Pre Grant Publications for class 219 subclass 78.15][List of Patents for class 219 subclass 78.15]78.15 Subclass 78.15 indent level is 2 With work cutting means
 [List of Pre Grant Publications for class 219 subclass 78.16][List of Patents for class 219 subclass 78.16]78.16 Subclass 78.16 indent level is 2 With work deforming means (e.g., tube sealing)
[List of Pre Grant Publications for class 219 subclass 79][List of Patents for class 219 subclass 79]79 Subclass 79 indent level is 2 With conveyer for workpiece
[List of Pre Grant Publications for class 219 subclass 81][List of Patents for class 219 subclass 81]81 Subclass 81 indent level is 2 Roller electrode
[List of Pre Grant Publications for class 219 subclass 86.1][List of Patents for class 219 subclass 86.1]86.1 Subclass 86.1 indent level is 2 By spot bonding
[List of Pre Grant Publications for class 219 subclass 95][List of Patents for class 219 subclass 95]95 Subclass 95 indent level is 2 Percussive
[List of Pre Grant Publications for class 219 subclass 97][List of Patents for class 219 subclass 97]97 Subclass 97 indent level is 2 Flash
[List of Pre Grant Publications for class 219 subclass 101][List of Patents for class 219 subclass 101]101 Subclass 101 indent level is 2 Butt
[List of Pre Grant Publications for class 219 subclass 108][List of Patents for class 219 subclass 108]108 Subclass 108 indent level is 2 Systems of current supply
[List of Pre Grant Publications for class 219 subclass 117.1][List of Patents for class 219 subclass 117.1]117.1 Subclass 117.1 indent level is 2 Methods
[List of Pre Grant Publications for class 219 subclass 119][List of Patents for class 219 subclass 119]119 Subclass 119 indent level is 2 Electrodes (e.g., structure)
[List of Pre Grant Publications for class 219 subclass 121.11][List of Patents for class 219 subclass 121.11]121.11 Subclass 121.11 indent level is 1 By arc
[List of Pre Grant Publications for class 219 subclass 121.12][List of Patents for class 219 subclass 121.12]121.12 Subclass 121.12 indent level is 2 Using electron beam
[List of Pre Grant Publications for class 219 subclass 121.36][List of Patents for class 219 subclass 121.36]121.36 Subclass 121.36 indent level is 2 Using plasma
[List of Pre Grant Publications for class 219 subclass 121.6][List of Patents for class 219 subclass 121.6]121.6 Subclass 121.6 indent level is 2 Using laser
[List of Pre Grant Publications for class 219 subclass 122][List of Patents for class 219 subclass 122]122 Subclass 122 indent level is 2 Control of arc direction
 [List of Pre Grant Publications for class 219 subclass 124.01][List of Patents for class 219 subclass 124.01]124.01 Subclass 124.01 indent level is 2 With ignition by retraction
[List of Pre Grant Publications for class 219 subclass 124.02][List of Patents for class 219 subclass 124.02]124.02 Subclass 124.02 indent level is 2 With gap control
[List of Pre Grant Publications for class 219 subclass 124.1][List of Patents for class 219 subclass 124.1]124.1 Subclass 124.1 indent level is 2 With automatic positioning of arc
[List of Pre Grant Publications for class 219 subclass 125.1][List of Patents for class 219 subclass 125.1]125.1 Subclass 125.1 indent level is 2 With predetermined welding operation
 [List of Pre Grant Publications for class 219 subclass 127][List of Patents for class 219 subclass 127]127 Subclass 127 indent level is 2 Spot arc bonding (e.g., arc riveting)
 [List of Pre Grant Publications for class 219 subclass 128][List of Patents for class 219 subclass 128]128 Subclass 128 indent level is 2 With working of bonding metal (e.g., by peening)
 [List of Pre Grant Publications for class 219 subclass 129][List of Patents for class 219 subclass 129]129 Subclass 129 indent level is 2 Brazzing or soldering
 [List of Pre Grant Publications for class 219 subclass 130.01][List of Patents for class 219 subclass 130.01]130.01 Subclass 130.01 indent level is 2 Including circuits for monitoring arc parameters
[List of Pre Grant Publications for class 219 subclass 130.1][List of Patents for class 219 subclass 130.1]130.1 Subclass 130.1 indent level is 2 Including arc-power supplies
[List of Pre Grant Publications for class 219 subclass 136][List of Patents for class 219 subclass 136]136 Subclass 136 indent level is 2 Welding
[List of Pre Grant Publications for class 219 subclass 137.2][List of Patents for class 219 subclass 137.2]137.2 Subclass 137.2 indent level is 2 With consumable electrode device
[List of Pre Grant Publications for class 219 subclass 138][List of Patents for class 219 subclass 138]138 Subclass 138 indent level is 2 Electrode holder (e.g., spring biased tong)
[List of Pre Grant Publications for class 219 subclass 145.1][List of Patents for class 219 subclass 145.1]145.1 Subclass 145.1 indent level is 1 Weld rod structure
[List of Pre Grant Publications for class 219 subclass 146.1][List of Patents for class 219 subclass 146.1]146.1 Subclass 146.1 indent level is 1 Weld rod composition
 [List of Pre Grant Publications for class 219 subclass 148][List of Patents for class 219 subclass 148]148 Subclass 148 indent level is 1 Bonding
[List of Pre Grant Publications for class 219 subclass 149][List of Patents for class 219 subclass 149]149 Subclass 149 indent level is 1 With forging or shaping (e.g., of powder)
 [List of Pre Grant Publications for class 219 subclass 155][List of Patents for class 219 subclass 155]155 Subclass 155 indent level is 1 Endless strip
 [List of Pre Grant Publications for class 219 subclass 156][List of Patents for class 219 subclass 156]156 Subclass 156 indent level is 1 Rods and bars
 [List of Pre Grant Publications for class 219 subclass 157][List of Patents for class 219 subclass 157]157 Subclass 157 indent level is 1 Rivets
[List of Pre Grant Publications for class 219 subclass 158][List of Patents for class 219 subclass 158]158 Subclass 158 indent level is 1 Work holders
 [List of Pre Grant Publications for class 219 subclass 162][List of Patents for class 219 subclass 162]162 Subclass 162 indent level is 1 Methods
[List of Pre Grant Publications for class 219 subclass 200][List of Patents for class 219 subclass 200]200 HEATING DEVICES
[List of Pre Grant Publications for class 219 subclass 201][List of Patents for class 219 subclass 201]201 Subclass 201 indent level is 1 Combined with diverse-type art device
[List of Pre Grant Publications for class 219 subclass 221][List of Patents for class 219 subclass 221]221 Subclass 221 indent level is 1 Tool or instrument
[List of Pre Grant Publications for class 219 subclass 243][List of Patents for class 219 subclass 243]243 Subclass 243 indent level is 1 Combined with pressure application means
[List of Pre Grant Publications for class 219 subclass 260][List of Patents for class 219 subclass 260]260 Subclass 260 indent level is 1 Resistive element: igniter type
[List of Pre Grant Publications for class 219 subclass 383][List of Patents for class 219 subclass 383]383 Subclass 383 indent level is 1 Electric arc-type devices
[List of Pre Grant Publications for class 219 subclass 385][List of Patents for class 219 subclass 385]385 Subclass 385 indent level is 1 Combined with container, enclosure, or support for material to be heated
[List of Pre Grant Publications for class 219 subclass 386][List of Patents for class 219 subclass 386]386 Subclass 386 indent level is 2 Portable or mobile
 [List of Pre Grant Publications for class 219 subclass 388][List of Patents for class 219 subclass 388]388 Subclass 388 indent level is 2 With means whereby material to be heated may be passed continuously through heated area (e.g., conveyor)
 [List of Pre Grant Publications for class 219 subclass 389][List of Patents for class 219 subclass 389]389 Subclass 389 indent level is 2 Revolving enclosure
 [List of Pre Grant Publications for class 219 subclass 390][List of Patents for class 219 subclass 390]390 Subclass 390 indent level is 2 Muffle-type enclosure
[List of Pre Grant Publications for class 219 subclass 391][List of Patents for class 219 subclass 391]391 Subclass 391 indent level is 2 Oven type
[List of Pre Grant Publications for class 219 subclass 415][List of Patents for class 219 subclass 415]415 Subclass 415 indent level is 2 Deep well
[List of Pre Grant Publications for class 219 subclass 420][List of Patents for class 219 subclass 420]420 Subclass 420 indent level is 2 Crucible or furnace type (i.e., adapted to hold meltable material)
 [List of Pre Grant Publications for class 219 subclass 428][List of Patents for class 219 subclass 428]428 Subclass 428 indent level is 2 Plural containers
[List of Pre Grant Publications for class 219 subclass 429][List of Patents for class 219 subclass 429]429 Subclass 429 indent level is 2 With vessel and stand
[List of Pre Grant Publications for class 219 subclass 438][List of Patents for class 219 subclass 438]438 Subclass 438 indent level is 2 With vessel
[List of Pre Grant Publications for class 219 subclass 443.1][List of Patents for class 219 subclass 443.1]443.1 Subclass 443.1 indent level is 2 Exposed horizontal planar support surface for material to be heated (e.g., hot plate, etc.)
 [List of Pre Grant Publications for class 219 subclass 444.1][List of Patents for class 219 subclass 444.1]444.1 Subclass 444.1 indent level is 3 Material is an electronic semiconductor device
 [List of Pre Grant Publications for class 219 subclass 445.1][List of Patents for class 219 subclass 445.1]445.1 Subclass 445.1 indent level is 3 With indicator
[List of Pre Grant Publications for class 219 subclass 446.1][List of Patents for class 219 subclass 446.1]446.1 Subclass 446.1 indent level is 3 Having sensor
 [List of Pre Grant Publications for class 219 subclass 449.1][List of Patents for class 219 subclass 449.1]449.1 Subclass 449.1 indent level is 3 Heating by convection
 [List of Pre Grant Publications for class 219 subclass 450.1][List of Patents for class 219 subclass 450.1]450.1 Subclass 450.1 indent level is 3 For direct contact with food (e.g., grill, griddle, etc.)
[List of Pre Grant Publications for class 219 subclass 451.1][List of Patents for class 219 subclass 451.1]451.1 Subclass 451.1 indent level is 3 Having support for a heating unit
 [List of Pre Grant Publications for class 219 subclass 457.1][List of Patents for class 219 subclass 457.1]457.1 Subclass 457.1 indent level is 3 Having direct manually actuated electrical switch
[List of Pre Grant Publications for class 219 subclass 458.1][List of Patents for class 219 subclass 458.1]458.1 Subclass 458.1 indent level is 3 Having electrical connection
[List of Pre Grant Publications for class 219 subclass 460.1][List of Patents for class 219 subclass 460.1]460.1 Subclass 460.1 indent level is 3 Heating element gapped from underside of the exposed horizontal support surface (e.g., ceramic plate, radiation-type, etc.)
[List of Pre Grant Publications for class 219 subclass 463.1][List of Patents for class 219 subclass 463.1]463.1 Subclass 463.1 indent level is 3 Formed by tubularly shaped heating unit
[List of Pre Grant Publications for class 219 subclass 465.1][List of Patents for class 219 subclass 465.1]465.1 Subclass 465.1 indent level is 3 Heating element contacting planar underside of the exposed horizontal planar support surface (e.g., sheet metal, etc.)
 [List of Pre Grant Publications for class 219 subclass 468.1][List of Patents for class 219 subclass 468.1]468.1 Subclass 468.1 indent level is 3 Heating element is embedded in the exposed horizontal planar support surface
 [List of Pre Grant Publications for class 219 subclass 468.2][List of Patents for class 219 subclass 468.2]468.2 Subclass 468.2 indent level is 3 Heating element is in a groove formed on underside of the exposed horizontal planar support surface (e.g., cast metal plate, etc.)
[List of Pre Grant Publications for class 219 subclass 469][List of Patents for class 219 subclass 469]469 Subclass 469 indent level is 2 Cylindrical or roller-type support for material to be heated
[List of Pre Grant Publications for class 219 subclass 472][List of Patents for class 219 subclass 472]472 Subclass 472 indent level is 1 Plural functions simultaneously or convertible
 [List of Pre Grant Publications for class 219 subclass 475][List of Patents for class 219 subclass 475]475 Subclass 475 indent level is 1 With plural heat utilization means (single heater)
[List of Pre Grant Publications for class 219 subclass 476][List of Patents for class 219 subclass 476]476 Subclass 476 indent level is 1 Plural separate heating devices
 [List of Pre Grant Publications for class 219 subclass 481][List of Patents for class 219 subclass 481]481 Subclass 481 indent level is 1 With protective means for heater
[List of Pre Grant Publications for class 219 subclass 482][List of Patents for class 219 subclass 482]482 Subclass 482 indent level is 1 With power supply and voltage or current regulation or current control means
[List of Pre Grant Publications for class 219 subclass 507][List of Patents for class 219 subclass 507]507 Subclass 507 indent level is 1 With current connection and/or disconnection means (e.g., switch)
[List of Pre Grant Publications for class 219 subclass 520][List of Patents for class 219 subclass 520]520 Subclass 520 indent level is 1 With heater-unit housing, casing, or support means (e.g., frame and single sheet)
[List of Pre Grant Publications for class 219 subclass 538][List of Patents for class 219 subclass 538]538 Subclass 538 indent level is 1 With heating unit structure
 
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