Horology: time measuring systems or devices – Displays or display device details – Optical
Patent
1989-06-15
1990-07-03
Roskoski, Bernard
Horology: time measuring systems or devices
Displays or display device details
Optical
368134, 368179, 368165, G04C 1702
Patent
active
049397095
ABSTRACT:
A visual device for simulating the motion of a clock pendulum consisting of a series of light emitting diodes having the property of emitting two distinct colors and electronic logic arranged to activate sequentially the series in one color in one direction and in the other color in the opposite direction.
REFERENCES:
patent: 4041692 (1977-08-01), Marshino
Radio Electronics "Unusual Electronic Clocks", pp. 41-45, 100, Apr. 1978.
Nitkin William
Roskoski Bernard
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