4. Pipes and tubular conduits
  5. Combined
  6. With end structure

Roger Lee Siferd

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Apparatus for forming a reinforcing structure on an end of a...

Plastic article or earthenware shaping or treating: apparatus – Preform reshaping or resizing means: or vulcanizing means... – Rod or tubular preform
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Pipe structure and method of manufacture

Pipes and tubular conduits – Combined – With end structure
Reexamination Certificate

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Pipe structure and method of manufacture

Plastic and nonmetallic article shaping or treating: processes – With severing – removing material from preform mechanically,... – Forming continuous work followed by cutting
Reexamination Certificate

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Profile ID: LFUS-PAI-P-2041806

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