Granted Patent
Utility
US 5,951,728 · App. 08/317,135
Coupling with filters
Inventor:
Douglas F. Hopson
Patented Case
View Patent ↗
Granted: Sep 14, 1999
Filed: Oct 3, 1994
Inventor
Douglas F. Hopson
Assignee (at issue)
Snap-Tite, Inc.
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.