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Class   D13EQUIPMENT FOR PRODUCTION, DISTRIBUTION, OR TRANSFORMATION OF ENERGY
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 [List of Pre Grant Publications for class D13 subclass 100][List of Patents for class D13 subclass 100]100 SOLID FUEL
[List of Pre Grant Publications for class D13 subclass 101][List of Patents for class D13 subclass 101]101 ENERGY CONVERSION OR TRANSFORMATION
 [List of Pre Grant Publications for class D13 subclass 102][List of Patents for class D13 subclass 102]102 Subclass 102 indent level is 1 Solar unit or component thereof
[List of Pre Grant Publications for class D13 subclass 103][List of Patents for class D13 subclass 103]103 Subclass 103 indent level is 1 Battery or casing therefor (1)
[List of Pre Grant Publications for class D13 subclass 104][List of Patents for class D13 subclass 104]104 Subclass 104 indent level is 2 Plural cell automotive type
[List of Pre Grant Publications for class D13 subclass 107][List of Patents for class D13 subclass 107]107 Subclass 107 indent level is 1 Battery charger
 [List of Pre Grant Publications for class D13 subclass 108][List of Patents for class D13 subclass 108]108 Subclass 108 indent level is 2 Cordless appliance type
 [List of Pre Grant Publications for class D13 subclass 109][List of Patents for class D13 subclass 109]109 Subclass 109 indent level is 2 With provision for mobility (e.g., wheeled, etc.)
[List of Pre Grant Publications for class D13 subclass 110][List of Patents for class D13 subclass 110]110 Subclass 110 indent level is 1 Transformer, rectifier or casing therefor (3)
 [List of Pre Grant Publications for class D13 subclass 111][List of Patents for class D13 subclass 111]111 Subclass 111 indent level is 2 Electric fence energizer
[List of Pre Grant Publications for class D13 subclass 112][List of Patents for class D13 subclass 112]112 Subclass 112 indent level is 1 Generator, motor or casing therefor
 [List of Pre Grant Publications for class D13 subclass 113][List of Patents for class D13 subclass 113]113 Subclass 113 indent level is 2 Engine starter type
[List of Pre Grant Publications for class D13 subclass 114][List of Patents for class D13 subclass 114]114 Subclass 114 indent level is 2 Dynamoelectric machine (e.g., generator, etc.)
 [List of Pre Grant Publications for class D13 subclass 117][List of Patents for class D13 subclass 117]117 Subclass 117 indent level is 1 Inductor (e.g., coil, etc.)
[List of Pre Grant Publications for class D13 subclass 118][List of Patents for class D13 subclass 118]118 Subclass 118 indent level is 1 Element or attachment
[List of Pre Grant Publications for class D13 subclass 119][List of Patents for class D13 subclass 119]119 Subclass 119 indent level is 2 Battery
 [List of Pre Grant Publications for class D13 subclass 122][List of Patents for class D13 subclass 122]122 Subclass 122 indent level is 2 Generator, motor or casing therefor
[List of Pre Grant Publications for class D13 subclass 123][List of Patents for class D13 subclass 123]123 DISTRIBUTION, MODIFICATION OR CONTROL
 [List of Pre Grant Publications for class D13 subclass 124][List of Patents for class D13 subclass 124]124 Subclass 124 indent level is 1 Voltage regulator
 [List of Pre Grant Publications for class D13 subclass 125][List of Patents for class D13 subclass 125]125 Subclass 125 indent level is 1 Condenser, resistor or potentiometer (5)
[List of Pre Grant Publications for class D13 subclass 126][List of Patents for class D13 subclass 126]126 Subclass 126 indent level is 1 Vehicle ignition component (6)
 [List of Pre Grant Publications for class D13 subclass 127][List of Patents for class D13 subclass 127]127 Subclass 127 indent level is 2 Spark or glow plug
 [List of Pre Grant Publications for class D13 subclass 128][List of Patents for class D13 subclass 128]128 Subclass 128 indent level is 1 Railway component
[List of Pre Grant Publications for class D13 subclass 129][List of Patents for class D13 subclass 129]129 Subclass 129 indent level is 1 Insulator (7)
 [List of Pre Grant Publications for class D13 subclass 130][List of Patents for class D13 subclass 130]130 Subclass 130 indent level is 2 Three or more repeats, or uniform configuration, about axis (8)
 [List of Pre Grant Publications for class D13 subclass 131][List of Patents for class D13 subclass 131]131 Subclass 131 indent level is 2 Symmetrical on two axes (9)
 [List of Pre Grant Publications for class D13 subclass 132][List of Patents for class D13 subclass 132]132 Subclass 132 indent level is 2 Bilaterally symmetrical (9)
[List of Pre Grant Publications for class D13 subclass 133][List of Patents for class D13 subclass 133]133 Subclass 133 indent level is 1 Connector, conductor or housing therefor (10)
[List of Pre Grant Publications for class D13 subclass 134][List of Patents for class D13 subclass 134]134 Subclass 134 indent level is 2 Lamp socket
[List of Pre Grant Publications for class D13 subclass 137.1][List of Patents for class D13 subclass 137.1]137.1 Subclass 137.1 indent level is 2 Plug and receptacle for domestic service (i.e., 120v or 220v type)
[List of Pre Grant Publications for class D13 subclass 138.1][List of Patents for class D13 subclass 138.1]138.1 Subclass 138.1 indent level is 2 Plug for domestic electric service (i.e., 120v or 220v type) (11)
[List of Pre Grant Publications for class D13 subclass 139.1][List of Patents for class D13 subclass 139.1]139.1 Subclass 139.1 indent level is 2 Receptacle for domestic electric service (i.e., 120v or 220v type) (12)
 [List of Pre Grant Publications for class D13 subclass 144][List of Patents for class D13 subclass 144]144 Subclass 144 indent level is 2 12-volt cigarette lighter type
 [List of Pre Grant Publications for class D13 subclass 145][List of Patents for class D13 subclass 145]145 Subclass 145 indent level is 2 Heater or small appliance type
[List of Pre Grant Publications for class D13 subclass 146][List of Patents for class D13 subclass 146]146 Subclass 146 indent level is 2 Three or more contacts (e.g., ports, terminals, etc.)
 [List of Pre Grant Publications for class D13 subclass 148][List of Patents for class D13 subclass 148]148 Subclass 148 indent level is 2 Ring or spade lug
[List of Pre Grant Publications for class D13 subclass 149][List of Patents for class D13 subclass 149]149 Subclass 149 indent level is 2 Compressive engagement (e.g., clamped, crimped, etc.) (15)
 [List of Pre Grant Publications for class D13 subclass 151][List of Patents for class D13 subclass 151]151 Subclass 151 indent level is 2 Threaded engagement
 [List of Pre Grant Publications for class D13 subclass 152][List of Patents for class D13 subclass 152]152 Subclass 152 indent level is 2 Junction or outlet box (16)
 [List of Pre Grant Publications for class D13 subclass 153][List of Patents for class D13 subclass 153]153 Subclass 153 indent level is 2 Cable, wire or cladding therefor (17)
[List of Pre Grant Publications for class D13 subclass 154][List of Patents for class D13 subclass 154]154 Subclass 154 indent level is 2 Element or attachment
[List of Pre Grant Publications for class D13 subclass 158][List of Patents for class D13 subclass 158]158 Subclass 158 indent level is 1 Switch or casing therefor (18)
 [List of Pre Grant Publications for class D13 subclass 159][List of Patents for class D13 subclass 159]159 Subclass 159 indent level is 2 Relay
[List of Pre Grant Publications for class D13 subclass 160][List of Patents for class D13 subclass 160]160 Subclass 160 indent level is 2 Circuit breaker, current suppressor or fuse, or casing therefor (19)
[List of Pre Grant Publications for class D13 subclass 162][List of Patents for class D13 subclass 162]162 Subclass 162 indent level is 2 Control panel, console or module
 [List of Pre Grant Publications for class D13 subclass 165][List of Patents for class D13 subclass 165]165 Subclass 165 indent level is 2 Photocell operated (21)
 [List of Pre Grant Publications for class D13 subclass 166][List of Patents for class D13 subclass 166]166 Subclass 166 indent level is 2 Solenoid operated
 [List of Pre Grant Publications for class D13 subclass 167][List of Patents for class D13 subclass 167]167 Subclass 167 indent level is 2 Foot operated
 [List of Pre Grant Publications for class D13 subclass 168][List of Patents for class D13 subclass 168]168 Subclass 168 indent level is 2 Hand held or remote type
 [List of Pre Grant Publications for class D13 subclass 169][List of Patents for class D13 subclass 169]169 Subclass 169 indent level is 2 Toggle, lever or rocker operated
 [List of Pre Grant Publications for class D13 subclass 170][List of Patents for class D13 subclass 170]170 Subclass 170 indent level is 2 Slide operated
 [List of Pre Grant Publications for class D13 subclass 171][List of Patents for class D13 subclass 171]171 Subclass 171 indent level is 2 Button operated
 [List of Pre Grant Publications for class D13 subclass 172][List of Patents for class D13 subclass 172]172 Subclass 172 indent level is 2 Reed type
[List of Pre Grant Publications for class D13 subclass 173][List of Patents for class D13 subclass 173]173 Subclass 173 indent level is 2 Element or attachment
 [List of Pre Grant Publications for class D13 subclass 179][List of Patents for class D13 subclass 179]179 Subclass 179 indent level is 1 Heat sink
[List of Pre Grant Publications for class D13 subclass 180][List of Patents for class D13 subclass 180]180 Subclass 180 indent level is 1 Electron or vacuum tube (23)
 [List of Pre Grant Publications for class D13 subclass 181][List of Patents for class D13 subclass 181]181 Subclass 181 indent level is 2 Cathode ray
 [List of Pre Grant Publications for class D13 subclass 182][List of Patents for class D13 subclass 182]182 Subclass 182 indent level is 1 Semiconductor, transistor or integrated circuit (24)
 [List of Pre Grant Publications for class D13 subclass 183][List of Patents for class D13 subclass 183]183 MAGNET
 [List of Pre Grant Publications for class D13 subclass 184][List of Patents for class D13 subclass 184]184 CASING OR ENCLOSURE NOT ELSEWHERE SPECIFIED
 [List of Pre Grant Publications for class D13 subclass 199][List of Patents for class D13 subclass 199]199 MISCELLANEOUS
SEARCH NOTES FOR CLASS D13
(1) Excludes holder such as box, mount, etc.; see subclass 119.
(2) Includes letter or numeral.
(3) Includes "power supply". For diode or vacuum tube, see subclass 180.
(4) Includes jumper cable set.
(5) Includes rheostat.
(6) For coil, see subclass 117. For wire, see subclass 153.
(7) For insulated wire, or wire cladding, see subclass 153.
(8) Helical attachment provision not considered.
(9) Includes mirror image symmetry. Helical attachment provision not considered.
(10) Includes grounding bar. For battery connector, see subclass 120.
(11) For plug combined with receptacle, see subclass 137.1+.
(12) Includes covered receptacle where receptacle, per se, is invisible. For receptacle combined with plug, see subclass 137.1+.
(13) Faceplate excluded. For receptacle combined with faceplate, see subclass 139.1.
(14) For surge suppressor or circuit breaker, see subclass 160.
(15) For biased engagement, see earlier subclasses.
(16) For control panel or switch panel see, respectively, subclasses 162+ and 158+.
(17) For cable marker, see subclass 157; For duct or channel, see subclass 155.
(18) For general purpose control panel or module, see subclass 162. For rheostat, see subclass 125.
(19) If control element such as switch, knob or lever is not disclosed, article is considered to be an element and is therefore classified in subclasses 173+. For combination with receptacle, see subclass 142.
(20) Includes bolder or block.
(21) Includes photocell or receiver unit, per se.
(22) If control element such as switch, knob, lever, etc. , is disclosed, article is considered to be a switch, per se, and is therefore classified above. For escutcheon, see D8-350+.
(23) Includes diode. Includes magnetron.
(24) Includes circuit board.

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