Granted Patent
Utility
US 4,954,055 · App. 07/369,806
Variable roller pump tubing
Inventors:
Donald A. Raible, William K. Morrow
Patented Case
View Patent ↗
Granted: Sep 4, 1990
Filed: Jun 22, 1989
Inventors
Donald A. Raible
William K. Morrow
Assignee (at issue)
Baxter International 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.