Granted Patent
Utility
US 4,565,393 · App. 06/439,440
Pipe joint
Inventor:
Gerald G. Greaves
Patented Case
View Patent ↗
Granted: Jan 21, 1986
Filed: Nov 5, 1982
Inventor
Gerald G. Greaves
Assignee (at issue)
Ameron, 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.