4. Typewriting machines
  5. Typing by other than type-face or type-die
  6. Character formation by impact

Donald K. Rex

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Data matrix print head

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

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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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Forms feed tractor

Advancing material of indeterminate length – Means to engage longitudinally spaced modifications in material – Pins on flexible belt or chain
Patent

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Method of making an endless forms feed tractor belt

Plastic and nonmetallic article shaping or treating: processes – With severing – removing material from preform mechanically,... – Making hole or aperture in article
Patent

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Platen to print head gap adjustment arrangement

Typewriting machines – Including adjustment for optimum printing plane – Responsive to thickness of record-medium
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Profile ID: LFUS-PAI-P-88284

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