Road condition indicator device

Details Road condition indicator device Road condition indicator device

1977-05-06

1978-11-07

Ruehl, Charles A.

Signals and indicators

Horns, whistles and compressional wave generators

Manually actuated air compressor

G09F 1102

Patent

active

041239881

ABSTRACT:
The specification discloses an indicia display device adapted for use in motor vehicles. The indicia are displayed on individually adjustable wheels which will not move when the device is vibrated, can be easily adjusted by the operator and can be easily seen at night as well as in daylight.

REFERENCES:
patent: 1468235 (1923-09-01), Japy
patent: 2492592 (1949-12-01), Perry et al.
patent: 3864857 (1975-02-01), Brude

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