4. Metal working
  5. Means to assemble or disassemble
  6. Puller or pusher means, contained force multiplying operator

Pan-Ching Huang

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Anchoring screw with double heads and triple threads of...

Expanded – threaded – driven – headed – tool-deformed – or locked-thr – Externally threaded fastener element – e.g. – bolt – screw – etc. – Double-ended
Reexamination Certificate

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Expandable metal body for an expansion bolt

Expanded – threaded – driven – headed – tool-deformed – or locked-thr – Having separate expander means – Bulged by axially contracting ends
Reexamination Certificate

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Expansion screw

Expanded – threaded – driven – headed – tool-deformed – or locked-thr – Having separate expander means – Made up of plural expansible segments or sections
Reexamination Certificate

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Fastener for fragile boards

Expanded – threaded – driven – headed – tool-deformed – or locked-thr – Having separate expander means – With hole forming means
Reexamination Certificate

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Metal body for an expansion bolt

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-2552117

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