Granted Patent
Utility
US 4,909,713 · App. 06/860,539
Peristaltic pump
Inventors:
P. Michael Finsterwald, George J. Eilers
Patented Case
View Patent ↗
Granted: Mar 20, 1990
Filed: May 7, 1986
Inventors
P. Michael Finsterwald
George J. Eilers
Assignee (at issue)
Cobe Laboratories, 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.