4. Typewriting machines
  5. Key-board or key lever-actuating mechanism
  6. Including mechanism for activating keys

Rich Chen

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Electromagnet induced switch

Electrical transmission or interconnection systems – Switching systems – Condition responsive
Patent

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Keyboard with expandable function keys

Typewriting machines – Key-board or key lever-actuating mechanism – Including mechanism for activating keys
Patent

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Multimedia keyboard structure

Coded data generation or conversion – Bodily actuated code generator – Including keyboard or keypad
Patent

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Profile ID: LFUS-PAI-P-900568

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