Granted Patent
Utility
US 4,919,578 · App. 07/204,285
Rivetless nut plate and fastener
Inventors:
Henry J. Zeigler, Bruce L. Frisinger
Patented Case
View Patent ↗
Granted: Apr 24, 1990
Filed: Jun 9, 1988
Inventors
Henry J. Zeigler
Bruce L. Frisinger
Assignee (at issue)
LOCKHEED MARTIN CORPORATION
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.