4. Metal working
  5. Means to assemble or disassemble
  6. Puller or pusher means, contained force multiplying operator

Walter H. West

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Lined pipe assembly

Pipe joints or couplings – With casing – lining or protector – Lined
Patent

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Method for manufacturing an improved plug valve

Metal working – Means to assemble or disassemble – Puller or pusher means – contained force multiplying operator
Patent

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Plug valve and method

Fluid handling – With casing – support – protector or static constructional... – Jacketed
Patent

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Profile ID: LFUS-PAI-P-606666

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