Granted Patent
Utility
US 4,983,901 · App. 07/342,254
Digital electronic foot control for medical apparatus and the like
Inventor:
Donald E. Lehmer
Patented Case
View Patent ↗
Granted: Jan 8, 1991
Filed: Apr 21, 1989
Inventor
Donald E. Lehmer
Assignee (at issue)
Allergan, 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.