Granted Patent
Utility
US 4,520,630 · App. 06/586,575
Cryogenic refrigerator and heat source
Inventor:
Domenico S. Sarcia
Patented Case
View Patent ↗
Granted: Jun 4, 1985
Filed: Mar 6, 1984
Inventor
Domenico S. Sarcia
Assignee (at issue)
CVI Incorporated
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.