4. Static molds
  5. Uniting preform with molding material
  6. Including means other than mold surface to support preform

Charles W. McInvale

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Insert forming hole to receive manhole step

Fire escape – ladder – or scaffold – Wall- or floor-attached – Independent rung or step
Reexamination Certificate

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Manhole lift insert locator

Static molds – Uniting preform with molding material – Including means other than mold surface to support preform
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Profile ID: LFUS-PAI-P-1335234

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