Granted Patent
Utility
US 4,881,145 · App. 07/036,762
Tape guide mechanism
Inventor:
Mark Hathaway
Patented Case
View Patent ↗
Granted: Nov 14, 1989
Filed: Apr 10, 1987
Inventor
Mark Hathaway
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.