Granted Patent
Utility
US 4,934,857 · App. 07/255,676
Co-conic fastener and fastening method
Inventor:
Kurt W. Swanson
Patented Case
View Patent ↗
Granted: Jun 19, 1990
Filed: Oct 11, 1988
Inventor
Kurt W. Swanson
Assignee (at issue)
General Dynamics Corporation, Convair Division
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.