Granted Patent
Utility
US 4,288,205 · App. 06/113,331
Variable volume peristaltic pump
Inventor:
Keith L. Henk
Patented Case
View Patent ↗
Granted: Sep 8, 1981
Filed: Jan 18, 1980
Inventor
Keith L. Henk
Assignee (at issue)
Pako Corporation
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.