4. Typewriting machines
  5. Including selection of type-face by...
  6. Including error detection

Hugh C. Clarke

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Bi-directional power supply circuit

Electric power conversion systems – Current conversion – Including an a.c.-d.c.-a.c. converter
Reexamination Certificate

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Mobile power generation system

Prime-mover dynamo plants – Electric control – Engine control
Reexamination Certificate

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Self-correcting printer-verifier

Typewriting machines – Including selection of type-face by... – Including error detection
Patent

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Self-correcting printer-verifier

Typewriting machines – Including selection of type-face by... – Including error detection
Patent

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Profile ID: LFUS-PAI-P-633972

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