Granted Patent
Utility
US 3,966,236 · App. 05/517,391
Releasable coupling
Inventor:
Roy R. Vann
Patented Case
View Patent ↗
Granted: Jun 29, 1976
Filed: Oct 23, 1974
Inventor
Roy R. Vann
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.