4. Printing and office machinery
  5. Typewriter or calculator
  6. Element or attachment

Robert C. Hoffman

Inventor

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Dot matrix print head

Typewriting machines – Typing by other than type-face or type-die – Character formation by impact
Patent

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Ferroelectric detector array utilizing material and fabrication

Batteries: thermoelectric and photoelectric – Thermoelectric – Radiation pyrometer
Patent

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Inked tape cartridge

Printing and office machinery – Typewriter or calculator – Element or attachment
Patent

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Teleprinter

Recording – communication – or information retrieval equipment – Computer – data processor equipment
Patent

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Teleprinter having single belt carriage and ribbon drive system

Typewriting machines – Including interposed inking device for record-medium – Endless ribbon or cartridge therefor
Patent

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Profile ID: LFUS-PAI-P-982547

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