Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
Home › Method of mass manufacture of rigid display sign

Method of mass manufacture of rigid display sign

US Patent 5221396 · Granted Jun 22, 1993

Assignee

Inventors

View full patent text on Google Patents →

More Patents by These Inventors

Rigid display sign1992
Wall mounted frame for posters and other printed material1990
Changeable sign1988
Method of making a changeable display sign1987
Multiple configuration display sign system1987
Tamper-proof display assembly1986
Sign with interchangeable characters1985