Apparatus for visually registering indicia

Details Apparatus for visually registering indicia Apparatus for visually registering indicia

1976-04-14

1977-08-16

Pitrelli, John F.

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40 70R, 116133, G09D 306

Patent

active

040416283

ABSTRACT:
Apparatus for visually registering information, which apparatus utilizes an outer adjustable member containing transparent indicia, which indicia will become visually distinct when said indicia is moved to overlie an inner fixed member and a color area thereon differing from the color surrounding said indicia.

REFERENCES:
patent: 801887 (1905-10-01), Low
patent: 1756600 (1930-04-01), Lee
patent: 3232401 (1966-02-01), Jones
patent: 3534315 (1970-10-01), De Nicola
patent: 3621811 (1971-11-01), Hill

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