4. Refrigeration
  5. Automatic control
  6. Withdrawing or adding refrigerant from or to normally closed...

Arnold M. Hanson

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Apparatus and method for recovering and recycling refrigerant

Refrigeration – With means for charging closed refrigeration producing system
Reexamination Certificate

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Refrigerant recovery and recycling system

Refrigeration – Automatic control – Withdrawing or adding refrigerant from or to normally closed...
Patent

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Refrigerant recovery and recycling system

Refrigeration – Processes – Separating or preventing formation of undesirables
Reexamination Certificate

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Profile ID: LFUS-PAI-P-1241700

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