Signs

Details Signs Signs

1979-12-10

1982-03-02

Curtis, Marshall M.

Communications: electrical

Land vehicle alarms or indicators

Internal alarm or indicator responsive to a condition of the...

3403785, 340806, G09G 316

Patent

active

043180981

ABSTRACT:
A sign includes characters, each character being assembled from an array of elements. Each element presents one of at least two visual appearances and comprises a member pivoted to rotate about an axis. The elements are selected and caused to rotate as required.

REFERENCES:
patent: 808884 (1906-01-01), Thomas et al.
patent: 3283427 (1966-11-01), Winrow
patent: 3307170 (1967-02-01), Aoyama et al.
patent: 3469258 (1969-09-01), Winrow
patent: 3581301 (1971-05-01), Stutz et al.
patent: 3680083 (1972-07-01), Pihl
patent: 3924226 (1975-12-01), Lacy et al.
patent: 3949392 (1976-04-01), Caritato
patent: 4163332 (1979-08-01), Salam

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