Granted Patent
Utility
US 4,664,424 · App. 06/548,770
Hose coupling
Inventor:
Richard D. Smith
Patented Case
View Patent ↗
Granted: May 12, 1987
Filed: Nov 4, 1983
Inventor
Richard D. Smith
Assignee (at issue)
Internationale Octrooi Maatschappij
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.