Granted Patent
Utility
US 4,386,783 · App. 06/296,459
Packing nut and stuffing box for hydraulic or manual actuation
Inventor:
Glenn R. Davis
Patented Case
View Patent ↗
Granted: Jun 7, 1983
Filed: Aug 26, 1981
Inventor
Glenn R. Davis
Assignee (at issue)
Otis Engineering Corporation
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.