Class   237	HEATING SYSTEMS
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1R

MISCELLANEOUS

1SL

. (1 indent ) Special liquid

2R

AUTOMATIC CONTROL

3

. (1 indent ) Brooder and incubator

4

.. (2 indent ) Water

5

. (1 indent ) Car

6

.. (2 indent ) Steam

7

. (1 indent ) Combined radiator and boiler

8R

. (1 indent ) Water

8A

.. (2 indent ) Automatic heating systems (water) with controls

8B

.. (2 indent ) Heating systems with high temperature boiling liquids

8C

.. (2 indent ) With boiler by-pass valve control

8D

.. (2 indent ) Compact heating systems with controls

9R

. (1 indent ) Steam

10

.. (2 indent ) Gas displaced

9A

.. (2 indent ) Automotive systems

9B

.. (2 indent ) With direct contact between products of combustion and the liquid to be vaporized

11

. (1 indent ) Compressed air

12

. (1 indent ) Processes

2A

. (1 indent ) Automatic heating systems with controls

2B

. (1 indent ) Heat source is a reverse cycle refrigerating system or heat pump

12.1

HEAT AND POWER PLANTS

12.2

. (1 indent ) Fire engine

12.3R

. (1 indent ) Vehicle

12.3A

.. (2 indent ) The heating is effected by circulated air

12.3B

.. (2 indent ) The heating is effected by circulated hot water

12.3C

.. (2 indent ) The heating system includes a combustion type heater

12.4

. (1 indent ) Car

12.5

.. (2 indent ) Smoke

12.6

.. (2 indent ) Air

12.7

... (3 indent ) Radiator

12.8

.. (2 indent ) Steam

13

PLANTS

14

BROODER AND INCUBATOR

15

. (1 indent ) Water

16

COMBINED RADIATOR AND BOILER

17

. (1 indent ) Fluid fuel

18

. (1 indent ) Solid fuel

19

COMBINED WITH WATER HEATER

28

VEHICLE

29

. (1 indent ) Stove

30

.. (2 indent ) Air casing

31

.. (2 indent ) Depending

32

. (1 indent ) Fluid fuel

33

.. (2 indent ) Radiator

34

. (1 indent ) Water

35

.. (2 indent ) Car boiler

36

... (3 indent ) Fluid fuel

37

... (3 indent ) Train steam

38

.... (4 indent ) Injected

39

.. (2 indent ) Train steam

40

. (1 indent ) Steam

41

.. (2 indent ) Car boiler

42

... (3 indent ) Train steam

43

. (1 indent ) Heated floor

44

. (1 indent ) Heat accumulator

45

. (1 indent ) Encased radiator

69

HEATED FLOOR

46

VENTILATING

47

. (1 indent ) Stove

48

. (1 indent ) Furnace

49

. (1 indent ) Enclosed radiator

50

AIR

52

. (1 indent ) Stove

53

. (1 indent ) Furnace

54

. (1 indent ) Upper-room drum

55

. (1 indent ) Flue heated

56

WATER

57

. (1 indent ) Fluid fuel

58

. (1 indent ) Steam

59

. (1 indent ) Circulation

60

.. (2 indent ) Geyser boiler

61

.. (2 indent ) Auxiliary boiler

62

.. (2 indent ) Boiler loop

63

.. (2 indent ) Pump

64

... (3 indent ) Steam displacing

65

. (1 indent ) Pressure regulator

66

. (1 indent ) Expansion tanks

67

STEAM

68

. (1 indent ) Air discharge

70

HEAT RADIATORS

71

. (1 indent ) Water, steam

72

.. (2 indent ) Injected

73

. (1 indent ) Steam

74

.. (2 indent ) Circuit

75

.. (2 indent ) Heat accumulator

76

. (1 indent ) Ceramic

77

. (1 indent ) Foot warmer

78R

. (1 indent ) Air moistener

78A

.. (2 indent ) Casing

78B

.. (2 indent ) Radiator wick

78C

.. (2 indent ) From radiator valve

79

. (1 indent ) Shields

80

ANTIFREEZING DEVICES

81

PROCESSES

	FOREIGN ART COLLECTIONS

FOR000

CLASS-RELATED FOREIGN DOCUMENTS

	DIGESTS

DIG1

INERT GAS

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