Granted Patent
Utility
US 4,954,046 · App. 07/447,880
Peristaltic pump with mechanism for maintaining linear flow
Inventors:
Ronald D. Irvin, David H. Burkett, David Kaplan, Ronald J. Harvey
Patented Case
View Patent ↗
Granted: Sep 4, 1990
Filed: Dec 8, 1989
Inventors
Ronald D. Irvin
David H. Burkett
David Kaplan
Ronald J. Harvey
Assignee (at issue)
Imed 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.