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Energy
No:236 -
Automatic temperature and humidity regulation (
227
)
No:136 -
Batteries: thermoelectric and photoelectric (
79
)
No:110 -
Furnaces (
245
)
No:048 -
Gas: heating and illuminating (
209
)
No:165 -
Heat exchange (
338
)
No:432 -
Heating (
266
)
No:237 -
Heating systems (
105
)
No:373 -
Industrial electric heating furnaces (
172
)
No:060 -
Power plants (
740
)
No:250 -
Radiant energy (
557
)
#10
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