Railroad warning sign

Details Railroad warning sign Railroad warning sign

1986-12-23

1989-10-17

Gandy, James M.

Sales and advertising equipment

Signs or display forms

Patent

active

D03040399

REFERENCES:
patent: D296542 (1988-07-01), Binford
patent: 755143 (1904-03-01), Landers
patent: 2168484 (1939-08-01), Loux
patent: 3067717 (1962-12-01), Imparato
patent: 3158132 (1964-11-01), Guthrie
patent: 3672323 (1972-06-01), Hawes
patent: 3715821 (1973-02-01), Hawes
Aldon Railway and Industrial Products Catalogue, p. 6, Portable Type Warning Sign.

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