IC 009. US 021 023 026 036 038. G & S: MICROPHONES MADE OF GRAPHITE, CARBON BLACK, SILICON CARBIDE; HIGH VOLTAGE PROTECTORS MADE OF GRAPHITE, CARBON BLACK, SILICON CARBIDE; PILE RESISTORS MADE OF GRAPHITE, CARBON BLACK, SILICON CARBIDE; RING RESISTORS MADE OF GRAPHITE, CARBON BLACK, SILICON CARBIDE; POTENTIOMETERS MADE OF GRAPHITE, CARBON BLACK, SILICON CARBIDE; ROLLS FOR TRANSFORMERS MADE OF GRAPHITE, CARBON BLACK, SILICON CARBIDE; DYNAMO PARTS, NAMELY, ROLL HOLDERS MADE OF GRAPHITE, CARBON BLACK, SILICON CARBIDE; DYNAMO PARTS, NAMELY, CONTACT METAL FOR CONTACTORS AND OTHER CURRENT TRANSMISSION, NAMELY, ELECTRIC CONTACTS
IC 012. US 019 021 023 031 035 044. G & S: CARBON RINGS AND DISCONNECTING LEVERS FOR LAND VEHICLE CLUTCHES
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