Granted Patent
Utility
US 6,494,693 · App. 09/698,813
Peristatic pump
Inventor:
Bengt Sunden
Patented Case
View Patent ↗
Granted: Dec 17, 2002
Filed: Oct 23, 2000
Inventor
Bengt Sunden
Assignee (at issue)
COLE-PARMER INSTRUMENT COMPANY 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.