4. Electricity: circuit makers and breakers
  5. Electric switch details
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Dale J. Retter

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Alpha-numeric keyboard

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

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Combination computer keyboard and mouse data entry system

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

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Keyboard

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

Equipment for production – distribution – or transformation of ene – Distribution – modification or control – Switch or casing therefor
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Switch assembly

Radiant energy – Photocells; circuits and apparatus – Optical or pre-photocell system
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Profile ID: LFUS-PAI-P-1100517

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