Granted Patent
Utility
US 4,806,042 · App. 07/122,750
Quick-disconnect rigid coupling
Inventors:
David T. Swank, Edrick H. Eater, Len A. Daniel
Patented Case
View Patent ↗
Granted: Feb 21, 1989
Filed: Nov 19, 1987
Inventors
David T. Swank
Edrick H. Eater
Len A. Daniel
Assignee (at issue)
Fluorocarbon Company
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.