Granted Patent
Utility
US 5,190,264 · App. 07/845,306
Adjustable valve packing arrangement
Inventor:
Henry W. Boger
Patented Case
View Patent ↗
Granted: Mar 2, 1993
Filed: Mar 3, 1992
Inventor
Henry W. Boger
Assignee (at issue)
Dresser Industries, 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.