4. Bleaching and dyeing; fluid treatment and chemical modification
  5. Treatment of hides, skins, feathers and animal tissues
  6. Tanning

Yen-Wen Lin

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Adjustable head for a wrench

Tools – Wrench – screwdriver – or driver therefor – Handle or shank
Reexamination Certificate

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Easy-to-assemble ratcheting tool

Tools – Wrench – screwdriver – or driver therefor – Handle clutched to head
Reexamination Certificate

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Single direction ratcheting wrench with stuck prevention and...

Tools – Wrench – screwdriver – or driver therefor – Handle clutched to head
Reexamination Certificate

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Wrenches

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-2119327

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