Granted Patent
Utility
US 4,354,071 · App. 06/150,057
Plural pedal foot control
Inventor:
Helmut Pietschmann
Patented Case
View Patent ↗
Granted: Oct 12, 1982
Filed: May 15, 1980
Inventor
Helmut Pietschmann
Assignee (at issue)
Sybron 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.