Granted Patent
Utility
US 5,158,528 · App. 07/675,774
Peristaltic infusion device and charger unit
Inventors:
Clarence L. Walker, Richard A. Sunderland, Mark A. Davis
Patented Case
View Patent ↗
Granted: Oct 27, 1992
Filed: Mar 27, 1991
Inventors
Clarence L. Walker
Richard A. Sunderland
Mark A. Davis
Assignee (at issue)
Sherwood Medical Company
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.