Granted Patent
Utility
US 4,813,855 · App. 07/066,759
Peristaltic pump
Inventors:
Harry H. LeVeen, William F. Kahler
Patented Case
View Patent ↗
Granted: Mar 21, 1989
Filed: Jun 26, 1987
Inventors
Harry H. LeVeen
William F. Kahler
Assignee (at issue)
Tek-Aids, 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.