4. Refrigeration
  5. Refrigeration producer
  6. Sorbent type

David A. Ball

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Absorption refrigeration and heat pump system

Refrigeration – Refrigeration producer – Sorbent type
Patent

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Heating system

Heat exchange – Structural installation – Heating and cooling
Patent

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Involute spiral wrap device

Pumps – Processes
Reexamination Certificate

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Mid-efficiency furnace with multiple venting option

Stoves and furnaces – Stoves – Heating
Patent

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Power supply

Electricity: power supply or regulation systems – External or operator controlled – Using a three or more terminal semiconductive device as the...
Reexamination Certificate

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Profile ID: LFUS-PAI-P-915341

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