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Classification Resources
 
Class   237HEATING SYSTEMS
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[List of Pre Grant Publications for class 237 subclass 1R][List of Patents for class 237 subclass 1R]  1R MISCELLANEOUS
[List of Pre Grant Publications for class 237 subclass 2R][List of Patents for class 237 subclass 2R]  2R AUTOMATIC CONTROL
[List of Pre Grant Publications for class 237 subclass 12.1][List of Patents for class 237 subclass 12.1]12.1 HEAT AND POWER PLANTS
 [List of Pre Grant Publications for class 237 subclass 13][List of Patents for class 237 subclass 13]13 PLANTS
[List of Pre Grant Publications for class 237 subclass 14][List of Patents for class 237 subclass 14]14 BROODER AND INCUBATOR
[List of Pre Grant Publications for class 237 subclass 16][List of Patents for class 237 subclass 16]16 COMBINED RADIATOR AND BOILER
 [List of Pre Grant Publications for class 237 subclass 19][List of Patents for class 237 subclass 19]19 COMBINED WITH WATER HEATER
[List of Pre Grant Publications for class 237 subclass 28][List of Patents for class 237 subclass 28]28 VEHICLE
 [List of Pre Grant Publications for class 237 subclass 69][List of Patents for class 237 subclass 69]69 HEATED FLOOR
[List of Pre Grant Publications for class 237 subclass 46][List of Patents for class 237 subclass 46]46 VENTILATING
[List of Pre Grant Publications for class 237 subclass 50][List of Patents for class 237 subclass 50]50 AIR
[List of Pre Grant Publications for class 237 subclass 56][List of Patents for class 237 subclass 56]56 WATER
[List of Pre Grant Publications for class 237 subclass 67][List of Patents for class 237 subclass 67]67 STEAM
[List of Pre Grant Publications for class 237 subclass 70][List of Patents for class 237 subclass 70]70 HEAT RADIATORS
 [List of Pre Grant Publications for class 237 subclass 80][List of Patents for class 237 subclass 80]80 ANTIFREEZING DEVICES
 [List of Pre Grant Publications for class 237 subclass 81][List of Patents for class 237 subclass 81]81 PROCESSES
 
FOREIGN ART COLLECTIONS
 
      FOR000          CLASS-RELATED FOREIGN DOCUMENTS
 
DIGESTS
 
 [List of Pre Grant Publications for class 237 subclass DIG1][List of Patents for class 237 subclass DIG1] DIG1 INERT GAS