Granted Patent
Utility
US 4,011,364 · App. 05/618,500
Non-reversible battery cover
Inventor:
Raymond L. Schenk, Jr.
Patented Case
View Patent ↗
Granted: Mar 8, 1977
Filed: Oct 1, 1975
Inventor
Raymond L. Schenk, Jr.
Assignee (at issue)
Gould 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.