4. Typewriting machines
  5. Including plural, independently supported key-boards,...

Charles H. Lingle

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Adjustable keyboard

Typewriting machines – Key-board or key lever-actuating mechanism – Key-board including keys grouped to facilitate positioning...
Patent

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Adjustable keyboard

Typewriting machines – Including plural – independently supported key-boards,...
Patent

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Adjustable keyboard for a personal computer

Recording – communication – or information retrieval equipment – Video or audio transmission – recording or playback equipment – Telephone equipment
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Combined mouse and trackball

Radiant energy – Photocells; circuits and apparatus – Optical or pre-photocell system
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Profile ID: LFUS-PAI-P-394970

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