Granted Patent
Utility
US 4,965,145 · App. 07/388,230
Electrical storage cell resistant to freezing
Inventors:
Howard H. Rogers, Steven J. Stadnick
Patented Case
View Patent ↗
Granted: Oct 23, 1990
Filed: Aug 1, 1989
Inventors
Howard H. Rogers
Steven J. Stadnick
Assignee (at issue)
Hughes Aircraft Company
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.