Granted Patent
Utility
US 5,248,077 · App. 07/971,162
Friction welding and welds made by friction
Inventors:
Lawrence J. Rhoades, James Randall Gilmore
Patented Case
View Patent ↗
Granted: Sep 28, 1993
Filed: Nov 3, 1992
Inventors
Lawrence J. Rhoades
James Randall Gilmore
Assignee (at issue)
Extrude Hone GmbH
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.