4. Recorders
  5. Thermal recording

David D. Thornburg

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Analog chart recorder employing thermal printing means

Recorders – Thermal recording
Patent

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Backup electrode for an electrostatic recorder

Recorders – Electric recording – Electrochemical
Patent

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Capacitance controlled keyswitch

Electricity: electrical systems and devices – Electrostatic capacitors – Variable
Patent

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Capacitive transducer

Electricity: measuring and testing – Conductor identification or location – Inaccessible
Patent

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Consumable credit card

Registers – Records – Laminated
Patent

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Profile ID: LFUS-PAI-P-28522

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