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Circuit for firing paystation coin relay using power derived fro

Telephonic communications – With check operated control – Coin signalling or control
Patent

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Coin call telephone apparatus

Telephonic communications – With check operated control – Coin signalling or control
Patent

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Coin deflector for a coin telephone receptacle

Telephonic communications – With check operated control – Coin signalling or control
Patent

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Coin operated telephone auditor

Telephonic communications – With check operated control – Coin signalling or control
Patent

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Coin operated telephone auditor

Telephonic communications – With check operated control – Coin signalling or control
Patent

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Coin release mechanism of pay phone

Telephonic communications – With check operated control – Coin signalling or control
Patent

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Coin release mechanism of payphone

Telephonic communications – With check operated control – Coin signalling or control
Reexamination Certificate

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Coin return chute for telephone pay station

Telephonic communications – With check operated control – Coin signalling or control
Patent

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Coin slot structure for coin call telephone apparatus

Telephonic communications – With check operated control – Coin signalling or control
Patent

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Coin validation method and apparatus for a coin telephone or sim

Telephonic communications – With check operated control – Coin signalling or control
Patent

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Coin-operated telephone apparatus

Telephonic communications – With check operated control – Coin signalling or control
Patent

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Coin-operated telephone apparatus

Telephonic communications – With check operated control – Coin signalling or control
Patent

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Communicating apparatus providing discriminated voice and/or ima

Telephonic communications – With check operated control – Coin signalling or control
Patent

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