Granted Patent
Utility
US 4,557,508 · App. 06/599,656
Tubular connector
Inventor:
Stephen John Walker
Patented Case
View Patent ↗
Granted: Dec 10, 1985
Filed: Apr 12, 1984
Inventor
Stephen John Walker
Assignee (at issue)
Cameron Iron Works, 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.