Granted Patent
Utility
US 4,949,914 · App. 07/375,400
Tape transport with rigid arm threader mechanism for leader block tape cartridge
Inventor:
William M. Barton, Jr.
Patented Case
View Patent ↗
Granted: Aug 21, 1990
Filed: Jul 3, 1989
Inventor
William M. Barton, Jr.
Assignee (at issue)
Cipher Data Products, 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.