4. Tools
  5. Wrench, screwdriver, or driver therefor
  6. Having work engaging and force exerting portion inserted...

Hermann Fruhm

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Cartridge type screwdriver

Tools – Wrench – screwdriver – or driver therefor – Having work engaging and force exerting portion inserted...
Patent

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Screwdriver bit

Bleaching and dyeing; fluid treatment and chemical modification – Treatment of hides – skins – feathers and animal tissues – Tanning
Design Patent

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Profile ID: LFUS-PAI-P-1838052

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