Granted Patent
Utility
US 4,681,494 · App. 06/784,348
Drive nut blend fastener with cap nut
Inventors:
John D. Pratt, Victor Belanger
Patented Case
View Patent ↗
Granted: Jul 21, 1987
Filed: Oct 4, 1985
Inventors
John D. Pratt
Victor Belanger
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.