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Class Numbers & Titles | Class Numbers Only | USPC Index | International | HELP |
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Class 237 | HEATING SYSTEMS |
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1R | MISCELLANEOUS |
2R | AUTOMATIC CONTROL |
3 | Brooder and incubator |
5 | Car |
7 | Combined radiator and boiler |
8R | Water |
8A | Automatic heating systems (water) with controls |
8B | Heating systems with high temperature boiling liquids |
8C | With boiler by-pass valve control |
8D | Compact heating systems with controls |
9R | Steam |
10 | Gas displaced |
9A | Automotive systems |
9B | With direct contact between products of combustion and the liquid to be vaporized |
11 | Compressed air |
12 | Processes |
2A | Automatic heating systems with controls |
2B | Heat source is a reverse cycle refrigerating system or heat pump |
12.1 | HEAT AND POWER PLANTS |
12.2 | Fire engine |
12.3R | Vehicle |
12.3A | The heating is effected by circulated air |
12.3B | The heating is effected by circulated hot water |
12.3C | The heating system includes a combustion type heater |
12.4 | Car |
13 | PLANTS |
14 | BROODER AND INCUBATOR |
16 | COMBINED RADIATOR AND BOILER |
19 | COMBINED WITH WATER HEATER |
28 | VEHICLE |
69 | HEATED FLOOR |
46 | VENTILATING |
50 | AIR |
56 | WATER |
67 | STEAM |
70 | HEAT RADIATORS |
80 | ANTIFREEZING DEVICES |
81 | PROCESSES |
FOREIGN ART COLLECTIONS | ||
FOR000 | CLASS-RELATED FOREIGN DOCUMENTS |
DIGESTS | ||
DIG1 | INERT GAS |
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