Granted Patent
Utility
US 5,468,029 · App. 08/275,906
Pipe coupling
Inventors:
Thomas L. Blose, David L. Britten, Kevin J. Humphreys, Trent Michael Victor Kaiser
Patented Case
View Patent ↗
Granted: Nov 21, 1995
Filed: Jul 14, 1994
Inventors
Thomas L. Blose
David L. Britten
Kevin J. Humphreys
Trent Michael Victor Kaiser
Assignee (at issue)
IPSCO Enterprises, 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.