Back pack signal light unit

Details Back pack signal light unit Back pack signal light unit

1976-04-05

1977-11-22

Lucas, Susan J.

Measuring, testing, or signalling instruments

Security or signal instrument or casing

Visual

D1006, D0399

Patent

active

D02464454

REFERENCES:
patent: D232869 (1974-09-01), Yoshimura
patent: 3696334 (1972-10-01), Demeter
patent: 3720918 (1973-03-01), Perl
patent: 3840853 (1974-10-01), Cukale

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