4. Electricity: circuit makers and breakers
  5. Multiple circuit control
  6. Pivoted contact

Donald Wu

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Joystick switch assembly

Electricity: circuit makers and breakers – Special application – Liquid or moisture responsive
Patent

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Joystick switch assembly

Electricity: circuit makers and breakers – Multiple circuit control – Pivoted contact
Patent

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Key switch

Typewriting machines – Key-board or key lever-actuating mechanism – Key-cap or key-stem structure
Patent

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Key switch for a keyboard

Electricity: circuit makers and breakers – Electric switch details – Actuators
Patent

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Keyboard with ports

Electricity: electrical systems and devices – Housing or mounting assemblies with diverse electrical... – For electronic systems and devices
Reexamination Certificate

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Profile ID: LFUS-PAI-P-304702

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