Granted Patent
Utility
US 5,657,181 · App. 08/543,134
Opening lever for magnetic tape cartridge door
Inventor:
Mark W. Perona
Patented Case
View Patent ↗
Granted: Aug 12, 1997
Filed: Oct 13, 1995
Inventor
Mark W. Perona
Assignee (at issue)
IO-Mega Holding 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.