4. Typewriting machines
  5. Pocket typewriter

Daniel J. Roock

Examiner

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Dot matrix printer

Printing – Selective or progressive – Bed and platen machines
Patent

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Drive mechanism for printer carriage and ink ribbon

Typewriting machines – Including interposed inking device for record-medium – Ribbon-feeding mechanism
Patent

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Electronic pocket calculator

Typewriting machines – Pocket typewriter
Patent

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Embossing apparatus

Printing – Embossing or penetrating – Rolling-contact machines
Patent

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Ink ribbon cartridge

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

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Profile ID: LFUS-PAI-P-111992

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