Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
Home › Core for film spool

Core for film spool

US Patent 4901936 · Granted Feb 20, 1990

Assignee

Inventors

View full patent text on Google Patents →

More Patents by These Inventors

Segmented glass laminate2005
Flange for a roll2001
Reloadable lighttight plastic cassette1994
Dental film packet1994
Light-tight cassette1993
Daylight-loading film sheet package1992
Film magazine1991
Light-cassette for light-sensitive photographic material1989
Light-cassette for light-sensitive photographic material1989
Light-tight cassette and method for packing rolls of light-sensitive material in1989
Light-tight film reel1989
Injection-moulded microfilm container1988