Information display device

Details Information display device Information display device

1975-06-25

1977-01-18

Queisser, Richard C.

Signals and indicators

Horns, whistles and compressional wave generators

Manually actuated air compressor

40 776, G09F 1102

Patent

active

040033325

ABSTRACT:
Apparatus for information display comprising a plurality of parallel, rotatable rolls having axially movable indicia on the surface thereof and indicator rods positioned adjacent and perpendicular to the rolls and parallel to the common plane of the axes of the rolls.

REFERENCES:
patent: 1087235 (1914-02-01), Hooper
patent: 2302296 (1942-11-01), Cluett
patent: 2412238 (1946-12-01), Wassel
patent: 2629951 (1953-03-01), Kittridge
patent: 3201882 (1965-08-01), Alford et al.
patent: 3680525 (1972-08-01), Berge
patent: 3717942 (1973-02-01), Presby

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