Granted Patent
Utility
US 4,632,592 · App. 06/735,540
Leakproof joint construction and method and apparatus for making the same
Inventor:
James C. Gunter
Patented Case
View Patent ↗
Granted: Dec 30, 1986
Filed: May 20, 1985
Inventor
James C. Gunter
Assignee (at issue)
ROBERTSHAW CONTROLS PRIVATE LIMITED
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.