Canoga's Creators
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Richard L Bennett
Abstract: An apparatus for applying an identifying tone to a telephone line pair without disturbing user service comprising a line tap, electrical signal-producing means for imposing a tone on the telephone pair, and a switch circuit connected between the tapping line and the tone-producing means and responsive to potential in the telephone pair so as to selectively connect the tone-producing means to the pair when the lines are not in use as indicated by the telephone-pair potential and capacity.
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Apparatus for identifying telephone cable pairs.
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3
Service Name
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4
Service Name
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