Signal box

Details Signal box Signal box

1998-03-31

1999-10-05

Jackson, Marcus A.

Measuring, testing, or signalling instruments

Security or signal instrument or casing

Visual

1005

Patent

active

D04147138

REFERENCES:
patent: D322584 (1991-12-01), Kawashima et al.
patent: D363036 (1995-10-01), Sasaki
patent: D363250 (1995-10-01), Miyataka
patent: D390145 (1998-02-01), Veates

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