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Variable resistance electronic simulator
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Variable level and liquid resistance automatic starter for electric motors
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New automatic starter with liquid resistance for electric motors, dielectric fluid controlled and available at medium voltage
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Device for transmitting and receiving telephone pulses
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PROCESS FOR ELECTROLYTIC DEBURRING OF METALLIC WORKPIECES, IN PARTICULAR OF PARTS FOR TELEPHONE SYSTEMS
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Telephone relay enclosures assembled from thermo-formed ABS sheet - for protection in damp conditions
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ACTIVE FILTER, THIRD ORDER, WITH INDEPENDENT ADJUSTABLE PARAMETERS, AND PROCESS FOR ADJUSTING THE SAID FILTER
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CIRCUIT ARRANGEMENT FOR TRANSMISSION OF TELEPHONE SIGNALS OR DATA
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SWITCHING ARRANGEMENT FOR SENDING AND RECEIVING IMPULSE-CODED TELEPHONE SIGNALS
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Process for limiting the speed of evaporation of liquid electrolytes and its application to liquid resistance rheostats
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GYROSCOPE
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