Sign

Details Sign Sign

1982-07-14

1983-12-20

Kemper, Catherine E.

Measuring, testing, or signalling instruments

Security or signal instrument or casing

Visual

D20 10, D1006

Patent

active

D02718618

REFERENCES:
patent: 1608548 (1926-11-01), Costello
patent: 3026498 (1962-03-01), Galliers
patent: 3800430 (1974-04-01), Samra

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