Granted Patent
Utility
US 5,595,065 · App. 08/499,259
Closed cycle cryogenic refrigeration system with automatic variable flow area throttling device
Inventors:
Michael Boiarski, Ralph C. Longsworth, Boris Yudin, Dennis Hill, Lawrence A. Klusmier, Ajay Khatri, Anthony L. Owoc
Patented Case
View Patent ↗
Granted: Jan 21, 1997
Filed: Jul 7, 1995
Inventors
Michael Boiarski
Ralph C. Longsworth
Boris Yudin
Dennis Hill
Lawrence A. Klusmier
Ajay Khatri
Anthony L. Owoc
Assignee (at issue)
APD Cryogenics, Inc.
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.