4. Building units and construction elements
  5. Stair, ladder, scaffold, or similar support
  6. Element or attachment

Sheng-Ming Chang

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Anti-slip strip for stairs

Building units and construction elements – Stair – ladder – scaffold – or similar support – Element or attachment
Design Patent

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Connecting shaft device

Rotary shafts – gudgeons – housings – and flexible couplings for ro – Coupling accommodates drive between members having... – Coupling transmits torque via radially spaced ball
Reexamination Certificate

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Connecting shaft device for screws

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

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Profile ID: LFUS-PAI-P-2057449

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