Granted Patent
Utility
US 3,969,155 · App. 05/566,141
Production of tapered titanium alloy tube
Inventor:
James F. McKeighen
Patented Case
View Patent ↗
Granted: Jul 13, 1976
Filed: Apr 8, 1975
Inventor
James F. McKeighen
Assignee (at issue)
Kawecki Berylco Industries, 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.