Granted Patent
Utility
US 4,451,364 · App. 06/354,395
High pressure seal and coupling
Inventors:
Jeremy Higgins, Robert Brownlee
Patented Case
View Patent ↗
Granted: May 29, 1984
Filed: Mar 3, 1982
Inventors
Jeremy Higgins
Robert Brownlee
Assignee (at issue)
Brownlee Labs, 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.