Granted Patent
Utility
US 5,735,447 · App. 08/717,857
Friction welding apparatus
Inventor:
John William Fix, Jr.
Patented Case
View Patent ↗
Granted: Apr 7, 1998
Filed: Sep 23, 1996
Inventor
John William Fix, Jr.
Assignee (at issue)
The Safe Seal Company, 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.