Granted Patent
Utility
US 4,548,533 · App. 06/602,356
Wedge-type fastener
Inventor:
John D. Pratt
Patented Case
View Patent ↗
Granted: Oct 22, 1985
Filed: Apr 20, 1984
Inventor
John D. Pratt
Assignee (at issue)
Monogram Industries Inc.
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.