Granted Patent
Utility
US 4,939,338 · App. 07/312,680
Welded article and method of manufacture
Inventors:
Louis F. Bregy, Jack Conti, Joseph E. Gorgens
Patented Case
View Patent ↗
Granted: Jul 3, 1990
Filed: May 9, 1986
Inventors
Louis F. Bregy
Jack Conti
Joseph E. Gorgens
Assignee (at issue)
Dresser 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.