Granted Patent
Utility
US 5,370,402 · App. 08/057,888
Pressure balanced compliant seal device
Inventors:
James F. Gardner, Hai-Ping Ma
Patented Case
View Patent ↗
Granted: Dec 6, 1994
Filed: May 7, 1993
Inventors
James F. Gardner
Hai-Ping Ma
Assignee (at issue)
EG&G Sealol, 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.