Lighted cross guard sign

Details Lighted cross guard sign Lighted cross guard sign

1986-04-28

1990-03-20

Lucas, Susan J.

Measuring, testing, or signalling instruments

Security or signal instrument or casing

Visual

D10109

Patent

active

D03067068

REFERENCES:
patent: D257614 (1980-12-01), Branner
patent: 3075174 (1963-01-01), Orszulak
patent: 3279110 (1966-10-01), Lelicoff
patent: 3810091 (1974-05-01), Hoover
patent: 4042919 (1977-08-01), Patty
patent: 4235033 (1980-11-01), Eilers

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