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US3310646A
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Thermal switch device with adjusting bolt means for the arms of the u-shaped hinge assembly
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System and apparatus for maintaining a constant temperature in a plurality of rooms
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Heating and cooling system and apparatus for enclosures
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Heat transfer unit
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Compressor
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Apparatus for making heat exchange tubes
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Apparatus for manufacturing helically finned tubes
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Radiator construction for use in convector heating systems
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Heating unit
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Apparatus for making lipped finned tubing
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Method and apparatus for making finned tubes
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Finned tubing
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Apparatus for manufacturing helically finned tubes
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