High speed display device

Details High speed display device High speed display device

1988-07-06

1990-08-14

Brier, Jeffery A.

Communications: electrical

Land vehicle alarms or indicators

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

34081505, 340764, G09G 334

Patent

active

049490826

ABSTRACT:
Display element has electromagnetic drive and two rotatable vanes which exhibit a display area to the viewer in ON mode and occlude it in OFF mode. Side walls may be used to prevent viewing the display area from the side in the OFF mode.

REFERENCES:
patent: 3648281 (1972-03-01), Dahms
patent: 4160583 (1979-07-01), Ueda
patent: 4163332 (1979-08-01), Salam
patent: 4794391 (1988-12-01), Costa et al.
patent: 4825205 (1989-04-01), Lee
patent: 4839635 (1989-06-01), Harris et al.

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