Granted Patent
Utility
US 6,554,552 · App. 09/843,585
Wedge-locking fastener assembly with ring retainer for washer
Inventor:
Alistair N. McKinlay
Patented Case
View Patent ↗
Granted: Apr 29, 2003
Filed: Apr 26, 2001
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.