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

Robert A. Sebrosky

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Electromagnetic actuator having improved dampening means

Electricity: magnetically operated switches – magnets – and electr – Magnets and electromagnets – With magneto-mechanical motive device
Patent

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Impact printer print mechanism and method of manufacture

Printing – Selective or progressive – Bed and platen machines
Patent

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Metalloid filament wire matrix print head

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

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Segmented drum bar helix printer

Printing – Selective or progressive – Bed and platen machines
Patent

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Profile ID: LFUS-PAI-P-195307

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