Granted Patent
Utility
US 4,803,605 · App. 07/081,655
Flashlight with a backup system
Inventors:
David R. Schaller, El-Sayed Megahed, James U. Neyer, Tor Petterson
Patented Case
View Patent ↗
Granted: Feb 7, 1989
Filed: Aug 4, 1987
Inventors
David R. Schaller
El-Sayed Megahed
James U. Neyer
Tor Petterson
Assignee (at issue)
Rayovac Corporation
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.