Granted Patent
Utility
US 4,190,259 · App. 05/940,534
Single apex two element fluid pressure seal assembly
Inventor:
Gordon T. Zitting
Patented Case
View Patent ↗
Granted: Feb 26, 1980
Filed: Sep 8, 1978
Inventor
Gordon T. Zitting
Assignee (at issue)
Microdot Mfg., 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.