Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
Home › Device for preventing unauthorized recycling of lens-fitted photo film unit

Device for preventing unauthorized recycling of lens-fitted photo film unit

US Patent 6314239 · Granted Nov 6, 2001

Estimated economic value: $26,000 ⓘ

Assignee

Inventors

View full patent text on Google Patents →

More Patents by These Inventors

Range-finding device2011
Lens-fitted photo film unit with electronic flash device2004
Data-imprinting apparatus for a lens-equipped film unit2002
Lens-fitted photo film unit having IC2002
Flash unit2002
Automatic exposure control device for a camera2002
Lens-fitted film unit with IC memory and method of writing data in IC memory2002
Flash unit2002
Electronic flash device for photographic camera2001
Lens-fitted photo film unit having IC2001
Lens-fitted photo film unit having IC2001
Lens-fitted photo film unit having IC2000