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Gerald R. Pruitt
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Mendon, MA, US
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last 30 patents
Information
Patent Grant
Temperature control system for a cryogenic refrigeration
Patent number
5,018,357
Issue date
May 28, 1991
Helix Technology Corporation
James Livingstone
F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
Information
Patent Grant
Linear motor compresser with stationary piston
Patent number
4,924,675
Issue date
May 15, 1990
Helix Technology Corporation
Graham J. Higham
F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
Information
Patent Grant
Means for periodic desorption of a cryopump
Patent number
4,910,965
Issue date
Mar 27, 1990
Helix Technology Corporation
Robert J. Lepofsky
F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information
Patent Grant
Dry roughing pump having a gas film bearing
Patent number
4,873,913
Issue date
Oct 17, 1989
Helix Technology Corporation
Gerald R. Pruitt
F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information
Patent Grant
Vibration isolation system for a linear reciprocating machine
Patent number
4,860,543
Issue date
Aug 29, 1989
Helix Technology Corporation
Graham J. Higham
F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
Information
Patent Grant
Vibration isolation system for a linear reciprocating machine
Patent number
4,783,968
Issue date
Nov 15, 1988
Helix Technology Corporation
Graham J. Higham
F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
Information
Patent Grant
Cryogenic refrigeration system having an involute laminated stator...
Patent number
4,761,960
Issue date
Aug 9, 1988
Helix Technology Corporation
Graham J. Higham
F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...