Granted Patent
Utility
US 5,180,298 · App. 07/644,451
Hydraulic pump with foamed elastomeric member in outlet chamber to reduce liquid-borne noise
Inventor:
John R. DiRe
Patented Case
View Patent ↗
Granted: Jan 19, 1993
Filed: Jan 23, 1991
Inventor
John R. DiRe
Assignee (at issue)
IMO Industries 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.