Portable traffic signal

Details Portable traffic signal Portable traffic signal

1981-10-26

1984-08-21

Lucas, Susan J.

Measuring, testing, or signalling instruments

Security or signal instrument or casing

Visual

Patent

active

D02751887

REFERENCES:
patent: D160190 (1950-09-01), May
patent: D214104 (1969-05-01), Karl
patent: 2375121 (1945-05-01), McClellan
patent: 2401940 (1946-06-01), Lange
patent: 2855583 (1958-10-01), Bonanno

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