Granted Patent
Utility
US 4,767,249 · App. 06/906,705
Self-broaching key
Inventors:
Robin William Elcock, Belen A. Guevara
Patented Case
View Patent ↗
Granted: Aug 30, 1988
Filed: Sep 12, 1986
Inventors
Robin William Elcock
Belen A. Guevara
Assignee (at issue)
REXNORD GMBH
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.