Granted Patent
Utility
US 4,060,668 · App. 05/614,467
Primary electrochemical cell
Inventor:
Franz Goebel
Patented Case
View Patent ↗
Granted: Nov 29, 1977
Filed: Sep 18, 1975
Inventor
Franz Goebel
Assignee (at issue)
GTE Laboratories 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.