Granted Patent
Utility
US 4,721,444 · App. 06/938,969
Fluid pump incorporating pulsation dampener surrounding its shaft
Inventor:
Ramon Pareja
Patented Case
View Patent ↗
Granted: Jan 26, 1988
Filed: Dec 8, 1986
Inventor
Ramon Pareja
Assignee (at issue)
Hypro, LLC
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.