Granted Patent
Utility
US 4,556,923 · App. 06/555,373
Tape cartridge drive with cartridge door opening mechanism
Inventor:
Dennis R. Olmsted
Patented Case
View Patent ↗
Granted: Dec 3, 1985
Filed: Nov 28, 1983
Inventor
Dennis R. Olmsted
Assignee (at issue)
Data Electronics, 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.