Granted Patent
Utility
US 4,836,614 · App. 06/800,589
Retainer scheme for machine bit
Inventor:
Randall W. Ojanen
Patented Case
View Patent ↗
Granted: Jun 6, 1989
Filed: Nov 21, 1985
Inventor
Randall W. Ojanen
Assignee (at issue)
GTE Products 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.