Granted Patent
Utility
US 5,779,098 · App. 08/701,631
Pressure control system for free-floating piston
Inventor:
Hershel E. Fancher
Patented Case
View Patent ↗
Granted: Jul 14, 1998
Filed: Aug 22, 1996
Inventor
Hershel E. Fancher
Assignee (at issue)
Grand Soft Equipment Co.
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.