Granted Patent
Utility
US 5,216,759 · App. 07/867,752
Safety goggles lens retention
Inventors:
Charles D. Hewitt, Andrew T. Kelley
Patented Case
View Patent ↗
Granted: Jun 8, 1993
Filed: Apr 13, 1992
Inventors
Charles D. Hewitt
Andrew T. Kelley
Assignee (at issue)
American Allsafe 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.