Granted Patent
Utility
US 4,797,997 · App. 07/117,176
Dry shavers
Inventors:
Charles C. Packham, Robert White, Steven Rogers
Patented Case
View Patent ↗
Granted: Jan 17, 1989
Filed: Nov 4, 1987
Inventors
Charles C. Packham
Robert White
Steven Rogers
Assignee (at issue)
The Gillette Company LLC
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.