4. Recording, communication, or information retrieval equipment
  5. Video or audio transmission, recording or playback equipment
  6. Telephone equipment

Josef Bismanovsky

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Electronic mouse

Recording – communication – or information retrieval equipment – Video or audio transmission – recording or playback equipment – Telephone equipment
Patent

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Ergonomic thumb-actuated trackball combined with control switche

Radiant energy – Photocells; circuits and apparatus – Optical or pre-photocell system
Patent

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Trackball

Recording – communication – or information retrieval equipment – Video or audio transmission – recording or playback equipment – Telephone equipment
Patent

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Profile ID: LFUS-PAI-P-1615620

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