Granted Patent
Utility
US 4,861,207 · App. 07/210,798
Barrel nut fastener apparatus
Inventor:
Tai H. Do
Patented Case
View Patent ↗
Granted: Aug 29, 1989
Filed: Jun 24, 1988
Inventor
Tai H. Do
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.