4. Plastic and nonmetallic article shaping or treating: processes
  5. Mechanical shaping or molding to form or reform shaped article
  6. Shaping against forming surface

Charles L. Boyers

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Internal bore impression tool

Plastic article or earthenware shaping or treating: apparatus – With interposed non-adhering web or sheet type parting means
Patent

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Method of taking an impression with an internal bore impression

Plastic and nonmetallic article shaping or treating: processes – Mechanical shaping or molding to form or reform shaped article – Shaping against forming surface
Patent

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Profile ID: LFUS-PAI-P-963339

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