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Douglas L. Sprung

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Apparatus for continuous forming of metal shapes

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Patent

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Method and apparatus for pipeline induction heating

H - Electricity – 05 – B
Patent

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Milling machine

B - Operations – Transporting – 23 – C
Patent

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Normalizer for linear welds of pipes

C - Chemistry – Metallurgy – 21 – D
Patent

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Portable pipe mill

B - Operations – Transporting – 23 – K
Patent

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Method and apparatus for pipeline induction heating

H - Electricity – 05 – B
Patent

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Normalizer for linear welds of pipes

C - Chemistry – Metallurgy – 21 – D
Patent

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Profile ID: LFCA-PAI-P-228815

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