Granted Patent
Utility
US 4,875,146 · App. 07/060,244
Flashlight bulb mounting
Inventor:
John H. Drane
Patented Case
View Patent ↗
Granted: Oct 17, 1989
Filed: May 19, 1987
Inventor
John H. Drane
Assignee (at issue)
Duracell 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.