4. Typewriting machines
  5. Including interposed inking device for record-medium
  6. Ribbon-feeding mechanism

Alan Hall

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Printer for printing on a continuous print medium

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

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Process of recovering polymers of hydroxyalkanoic acids

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Treating polymer containing material or treating a solid...
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