Granted Patent
Utility
US 5,228,817 · App. 07/950,108
Lightweight lockbolt fastener system
Inventor:
Frank J. Cosenza
Patented Case
View Patent ↗
Granted: Jul 20, 1993
Filed: Sep 23, 1992
Inventor
Frank J. Cosenza
Assignee (at issue)
VSI, LLC
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.