Granted Patent
Utility
US 4,440,358 · App. 06/414,234
Tape tensioning apparatus and method of assembly
Inventors:
Dennis M. Ryan, Robert Hursey
Patented Case
View Patent ↗
Granted: Apr 3, 1984
Filed: Sep 2, 1982
Inventors
Dennis M. Ryan
Robert Hursey
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.