Alexander Feiner

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Air controlled gutter cleaner

Brushing – scrubbing – and general cleaning – Machines – With air blast or suction
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Facility type determination technique

Telephonic communications – Diagnostic testing – malfunction indication – or electrical... – Of trunk or long line
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Modulated RF carrier distributing arrangement for key telephone

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Ringing control circuitry with shared ringing loop current detec

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Signal corrected optocoupled device

Radiant energy – Ionic separation or analysis – Static field-type ion path-bending selecting means
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Profile ID: LFUS-PAI-P-1216287

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