Granted Patent
Utility
US 4,396,199 · App. 06/263,814
Fluid pressure sealing member for a valve
Inventors:
Marshall J. Boyd, Robert A. DiDomizio, Jr., Richard C. Hobbs
Patented Case
View Patent ↗
Granted: Aug 2, 1983
Filed: May 15, 1981
Inventors
Marshall J. Boyd
Robert A. DiDomizio, Jr.
Richard C. Hobbs
Assignee (at issue)
Honeywell Limited
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.