4. Plastic article or earthenware shaping or treating: apparatus
  5. Utilizing subterranean feature as shaping means

Leonid G. Rozhkov

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Device for forming underground pipelines

Plastic article or earthenware shaping or treating: apparatus – Utilizing subterranean feature as shaping means
Patent

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Method of forming castings in holes

Plastic and nonmetallic article shaping or treating: processes – Forming structural installations in situ – Arched – domed – or vertical-cylindrical structure
Patent

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Profile ID: LFUS-PAI-P-1853760

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