Projection clock

Details Projection clock Projection clock

2006-12-12

2006-12-12

Miska, Vit (Department: 2841)

Horology: time measuring systems or devices

Chronological

With mechanical or electromechanical driven display

C368S010000, C368S239000

Reexamination Certificate

active

07149152

ABSTRACT:
A projection clock includes a base unit that includes a power supply, a clock circuit powered by the power supply, and a wireless transmitter for wirelessly transmitting time information provided by the clock circuit. Also, a projection unit, separate from the base unit, includes a projection circuit and a wireless receiver for wirelessly receiving the transmitted time information, based on which the projection circuit operatively projects the time.

REFERENCES:
patent: 2290811 (1942-07-01), Nassoit
patent: 2486425 (1949-11-01), Siegmund et al.
patent: 2875668 (1959-03-01), Stuart
patent: 3136210 (1964-06-01), Barrett
patent: 5247492 (1993-09-01), Pan
patent: 6798720 (2004-09-01), Haupt et al.

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