4. Road structure, process, or apparatus
  5. Pavement
  6. Vault cover-closure

Harold M. Bowman

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Ingot mold and method

Static molds – Including means to adjust mold volume during molding
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Split-ring manhole cover support

Road structure – process – or apparatus – Pavement – Vault cover-closure
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Stiffening flanges for deformation resistance of manhole cover s

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

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Profile ID: LFUS-PAI-P-533366

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