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US3059749A
(en)
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Coin testing apparatus
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(en)
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Electrical control circuit
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(en)
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Coin material testing device
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(en)
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Temperature controller
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EP0086225B1
(en)
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Coin examination apparatus employing an rl relaxation oscillator
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CA1153806A
(en)
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Coin acceptor apparatus
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(en)
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Coin selecting device
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SU92213A1
(mo)
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(en)
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Self tuning low frequency phase shift coin examination method and apparatus
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(en)
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Test means for paper and currency
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(en)
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System for discriminating classification of a magnetic recording medium
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(en)
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Electromagnetic switching means
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(en)
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Capacity actuated burglar alarm
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(en)
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Coin prover and sorter
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(en)
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Electronic switches
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(en)
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Time delay relay circuit
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(en)
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Testing metal articles
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(en)
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Testing apparatus
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(en)
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System for electrically testing and classifying impedance elements
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(en)
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Coin controlled switch
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(en)
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Meter construction |
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(en)
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Remote control
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(en)
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Coin testing
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(en)
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Voltage cut-out device
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(en)
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Tuning mechanism for radio apparatus
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