4. Typewriting machines
  5. Key-board or key lever-actuating mechanism
  6. Key-cap or key-stem structure

Kenny R. Spence

Inventor

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Keyboard with full-travel, self-leveling keyswitches

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

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Keyboard with full-travel, self-leveling keyswitches and return

Electricity: circuit makers and breakers – Multiple circuit control – Multiple switch
Patent

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Pharmaceutical laser drilling system

Electric heating – Metal heating – By arc
Reexamination Certificate

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Profile ID: LFUS-PAI-P-263327

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