Granted Patent
Utility
US 4,237,202 · App. 05/959,855
Aircraft battery
Inventor:
David L. Karpal
Patented Case
View Patent ↗
Granted: Dec 2, 1980
Filed: Nov 13, 1978
Inventor
David L. Karpal
Assignee (at issue)
Teledyne Industries, 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.