| Class D13 | EQUIPMENT FOR PRODUCTION, DISTRIBUTION, OR TRANSFORMATION OF ENERGY |
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![[List of Pre Grant Publications for class D13 subclass 100]](../as.gif) | ![[List of Patents for class D13 subclass 100]](../ps.gif) | 100 | SOLID FUEL |
| | 101 | ENERGY CONVERSION OR TRANSFORMATION |
| | 102 |  Solar unit or component thereof |
| | 103 | Battery or casing therefor (1) |
| | 107 | Battery charger |
| | 110 | Transformer, rectifier or casing therefor (3) |
| | 112 | Generator, motor or casing therefor |
| | 117 | Inductor (e.g., coil, etc.) |
| | 118 | Element or attachment |
| | 123 | DISTRIBUTION, MODIFICATION OR CONTROL |
| | 124 | Voltage regulator |
| | 125 | Condenser, resistor or potentiometer (5) |
| | 126 | Vehicle ignition component (6) |
| | 128 | Railway component |
| | 129 | Insulator (7) |
| | 130 |  Three or more repeats, or uniform configuration, about axis (8) |
| | 131 | Symmetrical on two axes (9) |
| | 132 | Bilaterally symmetrical (9) |
| | 133 | Connector, conductor or housing therefor (10) |
| | 134 | Lamp socket |
| | 137.1 | Plug and receptacle for domestic service (i.e., 120v or 220v type) |
| | 137.2 |  Outlet adapter or plug tap (i.e., increases the number of outlet receptacles) |
| | 137.3 | Including switch or circuit breaker |
| | 137.4 | Cord attached (e.g., extension cord or cord reel type) |
| | 138.1 | Plug for domestic electric service (i.e., 120v or 220v type) (11) |
| | 139.1 | Receptacle for domestic electric service (i.e., 120v or 220v type) (12) |
| | 139.2 | Track or conduit type |
| | 139.3 | For installation within junction box (13) |
| | 139.4 | Floor, ground or desktop mounted type |
| | 139.6 | Including switch or circuit breaker (14) |
| | 139.7 | Cord attached (e.g., extension cord or cord reel type) |
| | 144 | 12-volt cigarette lighter type |
| | 145 | Heater or small appliance type |
| | 146 | Three or more contacts (e.g., ports, terminals, etc.) |
| | 148 | Ring or spade lug |
| | 149 | Compressive engagement (e.g., clamped, crimped, etc.) (15) |
| | 151 | Threaded engagement |
| | 152 | Junction or outlet box (16) |
| | 153 | Cable, wire or cladding therefor (17) |
| | 154 | Element or attachment |
| | 158 | Switch or casing therefor (18) |
| | 159 | Relay |
| | 160 | Circuit breaker, current suppressor or fuse, or casing therefor (19) |
| | 162 | Control panel, console or module |
| | 162.1 | Programmable controller |
| | 163 | Console or floor type |
| | 164 | Linear array of three or more identical control or display elements |
| | 165 | Photocell operated (21) |
| | 166 | Solenoid operated |
| | 167 | Foot operated |
| | 168 | Hand held or remote type |
| | 169 | Toggle, lever or rocker operated |
| | 170 | Slide operated |
| | 171 | Button operated |
| | 172 | Reed type |
| | 173 | Element or attachment |
| | 179 | Heat sink |
| | 180 | Electron or vacuum tube (23) |
| | 182 | Semiconductor, transistor or integrated circuit (24) |
| | 183 | MAGNET |
| | 184 | CASING OR ENCLOSURE NOT ELSEWHERE SPECIFIED |
| | 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. | ||