Granted Patent
Utility
US 5,490,765 · App. 08/062,871
Dual stage pump system with pre-stressed diaphragms and reservoir
Inventors:
David C. Bailey, Carl A. Martin
Patented Case
View Patent ↗
Granted: Feb 13, 1996
Filed: May 17, 1993
Inventors
David C. Bailey
Carl A. Martin
Assignee (at issue)
Cybor Corporation
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.