Granted Patent
Utility
US 4,712,813 · App. 06/924,050
Coupling apparatus
Inventors:
David P. Passerell, Danny G. Rogge
Patented Case
View Patent ↗
Granted: Dec 15, 1987
Filed: Oct 28, 1986
Inventors
David P. Passerell
Danny G. Rogge
Assignee (at issue)
Perfection Holdings LLC
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.