Granted Patent
Utility
US 5,228,923 · App. 07/626,986
Cylindrical thermoelectric cells
Inventor:
Aharon Z. Hed
Patented Case
View Patent ↗
Granted: Jul 20, 1993
Filed: Dec 13, 1991
Inventor
Aharon Z. Hed
Assignee (at issue)
Implemed, 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.