4. Metal working
  5. Method of mechanical manufacture
  6. Gas and water specific plumbing component making

Charles A. Grenci

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Light-gas-isolation, oil-free, scroll vaccum-pump system

Rotary expansible chamber devices – Methods
Patent

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Method of making clean socket fit connection

Metal working – Method of mechanical manufacture – Gas and water specific plumbing component making
Patent

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Oil free scroll vacuum pump

Rotary expansible chamber devices – Working member has planetary or planetating movement – Helical working member – e.g. – scroll
Patent

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Plastic high vacuum piping components

Measuring and testing – With fluid pressure – Dimension – shape – or size
Patent

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Profile ID: LFUS-PAI-P-60857

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