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JPS6010865A
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Message transmitting system and method
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US4510349A
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System and method for transmitting messages to a telephone set through the subscriber's line in a telephone system
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FR2548492A2
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System and method for transmitting messages to a telephone set by the telephone line associated with same
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EP0130257A1
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System and method for the transmission of messages to a subscriber's set through a subscriber's line connected to it
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PH22223A
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System for transmitting messages to a telephone set through the subscriber's line in a telephone system
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ZA8209500B
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System for transmitting messages to a telephone set through the subscriber's line in a telephone system
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CA1198843A
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System for transmitting messages to a telephone set through the subscriber's line in a telephone system
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