What follows are the subclasses from one class of the Manual of Classification for US patents. As you scroll through the list and encounter a class/subclass of interest, you can jump back to the top and retrieve patent titles by entering the class/subclass in the box below.
Enter a class/subclass code here to get a list of patent titles. Use
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363-131 121-55A 14-.5
that is, no embedded spaces, class and subclass seperated by a dash, and any
subclass letters capitalized. Currently Design Patent titles (those in the
classes of the form Dxx.yy) are not retreivable.
Class Number: D13 Class Title: EQUIPMENT FOR PRODUCTION, DISTRIBUTION, OR TRANSFORMATION OF ENERGY Subclass Subclass Number Title 100 SOLID FUEL (2) 101 ENERGY CONVERSION OR TRANSFORMATION (3) 102 .Solar unit or component thereof 103 .Battery or casing therefor (4) 104 ..Plural cell automotive type 105 ...Simulative (5) 106 ...Pass-through hand or finger grip 107 .Battery charger 108 ..Cordless appliance type 109 ..With provision for mobility (e.g., wheeled, etc.) 110 .Transformer, rectifier or casing therefor (6) 111 ..Electric fence energizer 112 .Generator, motor or casing therefor 113 ..Engine starter type 114 ..Dynamoelectric machine (e.g., generator, etc.) 115 ...Wind or hand powered 116 ...With handle, bar or loop for lifting 117 .Inductor (e.g., coil, etc.) 118 .Element or attachment 119 ..Battery 120 ...Connector (e.g., terminal, clamp, etc.) (7) 121 ...Electrode (i.e., grid or plate type) 122 ..Generator, motor or casing therefor 123 DISTRIBUTION, MODIFICATION OR CONTROL (8) 124 .Voltage regulator 125 .Condenser, resistor or potentiometer (9) 126 .Vehicle ignition component (10) 127 ..Spark or glow plug 128 .Railway component 129 .Insulator (11) 130 ..Three or more repeats, or uniform configuration, about axis (12) 131 ..Symmetrical on two axes (13) 132 ..Bilaterally symmetrical (13) 133 .Connector, conductor or housing therefor (14) 134 ..Lamp socket 135 ...Converter (e.g., incandescent to fluorescent, etc.) 136 ...Provision for plural bulb 137 ..Domestic electric service plug or receptacle (i.e., 120-v or 220-v type) 138 ...Plug 139 ....Combined with receptacle 140 .....Extension type (e.g., cord, cord with reel, etc.) 141 ....Grounded or three prong type 142 ...Combined with circuit breaker or switch 143 ...Grounded or three prong type 144 ..12-volt cigarette lighter type 145 ..Heater or small appliance type 146 ..Three or more contacts (e.g., ports, terminals, etc.) 147 ...Linear array of identical repeating ports or contacts (i.e., in-line array)) 148 ..Ring or spade lug 149 ..Compressive engagement (e.g., clamped, crimped, etc.) (15) 150 ...Wire nut type 151 ..Threaded engagement 152 ..Junction or outlet box (16) 153 ..Cable, wire or cladding therefor (17) 154 ..Element or attachment 155 ...Conduit, duct or channel 156 ...Cap, cover or boot 157 ...Cable marker 158 .Switch or casing therefor (18) 159 ..Relay 160 ..Circuit breaker, current suppressor or fuse, or casing therefor (19) 161 ...Fuse (20) 162 ..Control panel, console or module 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 174 ...Actuator (e.g., button, slide, etc.) 175 ....Blade or pivoting contact 176 ...Reed switch 177 ...Face panel or cover (22) 178 ...Circuit breaker, current suppressor or fuse 179 .Heat sink 180 .Electron or vacuum tube (23) 181 ..Cathode ray 182 .Semiconductor, transistor or integrated circuit (24) 183 MAGNET (25) 184 CASING OR ENCLOSURE NOT ELSEWHERE SPECIFIED 199 MISCELLANEOUS (26)