4. Printing
  5. Selective or progressive
  6. Bed and platen machines

William A. Patterson

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Electromagnetic hammer actuator for impact printer

Typewriting machines – Including type-set-assemblage mounted on carrier and... – Imprint by movement of record-medium against type-face
Patent

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Spring mounted torsionally rigid print hammer mechanism

Printing – Selective or progressive – Bed and platen machines
Patent

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Taut band piezoelectric actuator for wire matrix printing elemen

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

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Profile ID: LFUS-PAI-P-218553

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