Road barrier

Details Road barrier Road barrier

1983-01-10

1984-11-27

Burke, Wallace R.

Measuring, testing, or signalling instruments

Security or signal instrument or casing

Visual

Patent

active

D02765101

REFERENCES:
patent: D263454 (1982-03-01), Leung
patent: 2333273 (1943-11-01), Scanlon
patent: 2762327 (1956-09-01), Weig
patent: 3499413 (1970-03-01), Heard
patent: 3732842 (1973-05-01), Vara, Sr.

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