Granted Patent
Utility
US 5,688,091 · App. 08/640,320
Self-locking fastener with captive washer
Inventor:
Alistair N. McKinlay
Patented Case
View Patent ↗
Granted: Nov 18, 1997
Filed: Apr 30, 1996
Inventor
Alistair N. McKinlay
Assignee (at issue)
Hong-Kong Disc Lock Company Ltd.
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.