Granted Patent
Utility
US 4,735,534 · App. 07/002,539
Fastener assembly for cylindrical opening
Inventor:
Donald N. Oehlke
Patented Case
View Patent ↗
Granted: Apr 5, 1988
Filed: Jan 12, 1987
Inventor
Donald N. Oehlke
Assignee (at issue)
Eaton 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.