Granted Patent
Utility
US 4,335,906 · App. 06/055,114
Weldable joint
Inventors:
Paul J. Cardinale, Leonard E. Partelow, Jr.
Patented Case
View Patent ↗
Granted: Jun 22, 1982
Filed: Jul 5, 1979
Inventors
Paul J. Cardinale
Leonard E. Partelow, Jr.
Assignee (at issue)
Parker-Hannifin Corporation
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.