Sign board

Details Sign board Sign board

1987-09-18

1989-10-03

Lucas, Susan J.

Sales and advertising equipment

Signs or display forms

Billboard type

D20 44

Patent

active

D03038149

REFERENCES:
patent: D280469 (1985-09-01), Heyman et al.
patent: 2145946 (1939-02-01), Morrissey
patent: 2816382 (1957-12-01), Spertus
patent: 3606507 (1971-09-01), Williams, Jr.
patent: 4356647 (1982-11-01), Farris

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