Granted Patent
Utility
US 4,500,817 · App. 06/533,163
Tape tension sensor and servo embodying same
Inventor:
Stefan Kudelski
Patented Case
View Patent ↗
Granted: Feb 19, 1985
Filed: Sep 15, 1983
Inventor
Stefan Kudelski
Assignees (at issue)
Kudelski S.A.
Ampex 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.