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

Gianpaolo Bonmassari

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Contact-type keyboard

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

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Correction device for typewriters

Typewriting machines – Including type-set-assemblage mounted on carrier and... – Including type-faces movable relative to type-face-carrier
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Profile ID: LFUS-PAI-P-661037

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