Granted Patent
Utility
US 5,138,767 · App. 07/667,348
Enhanced cutting system for electric dry shavers
Inventor:
David R. Locke
Patented Case
View Patent ↗
Granted: Aug 18, 1992
Filed: Mar 11, 1991
Inventor
David R. Locke
Assignee (at issue)
Remington Products 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.