4. Electricity: motive power systems
  5. Induction motor systems
  6. Primary circuit control

William Leslie Kopko

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Control system for a refrigerator with two evaporating...

Refrigeration – Automatic control – Of external fluid or means
Reexamination Certificate

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Reciprocating compressor with auxiliary port

Pumps – Expansible chamber type – Pumping member position controlled port
Reexamination Certificate

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Roller mechanism

Machine element or mechanism – Mechanical movements – Reciprocating or oscillating to or from alternating rotary
Reexamination Certificate

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Solar air conditioner

Refrigeration – Processes – Circulating external gas
Reexamination Certificate

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Variable-speed drive for single-phase motors

Electricity: motive power systems – Induction motor systems – Primary circuit control
Patent

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Profile ID: LFUS-PAI-P-1219190

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