4. Road structure, process, or apparatus
  5. Pavement
  6. Vault cover-closure
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Emergency maintenance hole cover, and method of installation

Road structure – process – or apparatus – Pavement – Vault cover-closure
Patent

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Enclosement to shield structure which secures entrance-deterring

Road structure – process – or apparatus – Pavement – Vault cover-closure
Patent

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Entrance-deterring cap for manhole openings

Road structure – process – or apparatus – Pavement – Vault cover-closure
Patent

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Excavation closure

Road structure – process – or apparatus – Pavement – Vault cover-closure
Patent

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Extension for a canal bed liner

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

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External manhole chimney seal

Road structure – process – or apparatus – Pavement – Vault cover-closure
Patent

  [ 0.00 ] – not rated yet Voters 0   Comments 0
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