Sign for signalling direction of traffic flow

Details Sign for signalling direction of traffic flow Sign for signalling direction of traffic flow

1994-09-14

1995-11-14

Gandy, James M.

Measuring, testing, or signalling instruments

Security or signal instrument or casing

Visual

D20 10

Patent

active

D03641090

REFERENCES:
patent: D292681 (1987-11-01), Evans
patent: D313661 (1991-01-01), Kang
patent: D314524 (1991-02-01), Perry
Apr. 17, 1989 Federal Signal Corporation advertisement page for "Arrow Panel."

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