Granted Patent
Utility
US 5,085,536 · App. 07/082,529
Strengthened graphite-metal threaded connection
Inventor:
John F. Pelton
Patented Case
View Patent ↗
Granted: Feb 4, 1992
Filed: Aug 7, 1987
Inventor
John F. Pelton
Assignee (at issue)
Union Carbide Industrial Gases Technology 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.