Granted Patent
Utility
US 5,647,217 · App. 08/585,038
Stirling cycle cryogenic cooler
Inventors:
Laurence B. Penswick, Ronald E. Neely
Patented Case
View Patent ↗
Granted: Jul 15, 1997
Filed: Jan 11, 1996
Inventors
Laurence B. Penswick
Ronald E. Neely
Assignee (at issue)
Stirling Technology, 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.