Check-actuated control mechanisms – Including noncontacting – relatively movable parts connected...
Patent
1981-01-26
1983-02-01
Tollberg, Stanley H.
Check-actuated control mechanisms
Including noncontacting, relatively movable parts connected...
221 66, G07F 702
Patent
active
043710700
ABSTRACT:
A deposit for a key is returned after the key is deposited in the machine where an element on the key unlocks the coin control mechanism.
REFERENCES:
patent: 2997151 (1961-08-01), Chandler
patent: 3165691 (1965-01-01), McClanahan
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