4. Refrigeration
  5. Reversible, i.e., heat pump
  6. With product treatment

Charles H. Perkins

Inventor

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Motor protection circuit

Electricity: electrical systems and devices – Safety and protection of systems and devices – Motor protective condition responsive circuits
Patent

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Multizone air conditioning system

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

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Reversible refrigerant system and four-way reversing valve there

Refrigeration – Reversible – i.e. – heat pump – With product treatment
Patent

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Reversible refrigerant system and four-way reversing valve there

Fluid handling – Systems – Supply and exhaust
Patent

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Reversing valve construction

Fluid handling – Systems – Multi-way valve unit
Patent

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Profile ID: LFUS-PAI-P-243338

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