Granted Patent
Utility
US 4,521,706 · App. 06/533,095
Tape driving capstan powered with a permanent magnet motor
Inventors:
Stefan Kudelski, Ernest Rosselet
Patented Case
View Patent ↗
Granted: Jun 4, 1985
Filed: Sep 15, 1983
Inventors
Stefan Kudelski
Ernest Rosselet
Assignee (at issue)
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.