4. Locks
  5. Special application
  6. For closures

Ming-Huang Chang

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Quick manhole/handhole construction method and related devices

Road structure – process – or apparatus – Pavement – Vault cover-closure
Reexamination Certificate

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Quick release locking means for a cover

Locks – Special application – For closures
Reexamination Certificate

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Vibration resistive instant responding roadway or bridge...

Bridges – Deck – Joint
Reexamination Certificate

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Profile ID: LFUS-PAI-P-2079410

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