4. Refrigeration
  5. Low pressure cold trap process and apparatus

Paul E. Dresens

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Flywheel system with parallel pumping arrangement

Pumps – Electrical or getter type – Getter heating – vaporizing – or regeneration
Reexamination Certificate

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Helium management control system

Refrigeration – Processes – Assembling – charging – or repairing of refrigeration producer
Reexamination Certificate

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Purge and rough cryopump regeneration process, cryopump and cont

Refrigeration – Low pressure cold trap process and apparatus
Patent

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Profile ID: LFUS-PAI-P-1467093

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