Membership
Tour
Register
Log in
Peter K. Bertsch
Follow
Person
Harvard, MA, US
People
Overview
Industries
Organizations
People
Information
Impact
Patents Grants
last 30 patents
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
Squeeze film bearing for Stirling cycle compressor pistons
Patent number
4,754,608
Issue date
Jul 5, 1988
Peter K. Bertsch
F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
Information
Patent Grant
Cryocooler having low magnetic signature
Patent number
4,606,194
Issue date
Aug 19, 1986
Helix Technology Corporation
F. William Pirtle
F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
Information
Patent Grant
Clearance seals and piston for cryogenic refrigerator compressors
Patent number
4,574,591
Issue date
Mar 11, 1986
Helix Technology Corporation
Peter K. Bertsch
F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
Information
Patent Grant
Balanced integral Stirling cryogenic refrigerator
Patent number
4,550,571
Issue date
Nov 5, 1985
Helix Technology Corporation
Peter K. Bertsch
F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
Information
Patent Grant
Refrigeration system with clearance seals
Patent number
4,543,792
Issue date
Oct 1, 1985
Helix Technology Corporation
Peter K. Bertsch
F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...