Granted Patent
Utility
US 5,934,590 · App. 09/002,008
Film cartridge light blocking door opening/closing mechanism
Inventors:
Akira Funahashi, Junichi Tanii
Patented Case
View Patent ↗
Granted: Aug 10, 1999
Filed: Dec 31, 1997
Inventors
Akira Funahashi
Junichi Tanii
Assignee (at issue)
Minolta Co., Ltd.
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.