4. Heat exchange
  5. Movable heating or cooling surface
  6. Rotary drum

John W. Relyea

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Air conditioning thermostatic control system having modular incl

Heat exchange – Movable heating or cooling surface – Rotary drum
Patent

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Two stage control circuit for reversible air cycle heat pump

Heat exchange – With alarm – indicator – signal – register – recorder – test or... – Remotely controlled inspection means
Patent

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Profile ID: LFUS-PAI-P-1076021

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