4. Telegraphy
  5. Systems
  6. Printing

John H. MacNeill

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Coin fraud preventing unit and modular configurations for pay te

Telephonic communications – With check operated control – Fraud or interference prevention
Patent

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Coin fraud preventing unit and modular configurations for pay te

Telephonic communications – With check operated control – Fraud or interference prevention
Patent

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Coin fraud prevention unit and modular configurations for pay te

Telephonic communications – With check operated control – Fraud or interference prevention
Patent

  [ 0.00 ] – not rated yet Voters 0   Comments 0

High speed electromagnetic printing head

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

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Locking pin

Patent

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Profile ID: LFUS-PAI-P-901754

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