Chess clock

Horology: time measuring systems or devices – Time interval – With alternately operating indicators

Patent

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Details

368187, G04F 300

Patent

active

044720670

ABSTRACT:
A game timing device for simultaneously timing events for two players comprising clock means for counting the time of two different events

REFERENCES:
patent: 4036008 (1977-07-01), Okamoto et al.
patent: 4062180 (1977-12-01), Meshi et al.
patent: 4079583 (1978-03-01), Larsen
patent: 4083176 (1978-04-01), Higashi
patent: 4092822 (1978-06-01), Digoz et al.
patent: 4177632 (1979-12-01), Burki et al.

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