4. Static structures (e.g., buildings)
  5. Controlled by condition responsive means

Benjamin J. Campagna

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Combination manhole closure assembly and separate support ring

Static structures (e.g. – buildings) – Controlled by condition responsive means
Patent

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Manhole closure assembly

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

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Ring expander device

Tools – Receptacle closure remover – Gripping type
Patent

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Profile ID: LFUS-PAI-P-779176

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