US2027018A
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Corrugating machine
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US1981777A
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Pipe coupling
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US2056155A
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Tube and rod hardening and straightening apparatus and method
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US1982369A
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Method and machine for making corrugated tubes
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US1860989A
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Die for corrugated tubes
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US1653428A
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Golf stick
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US1778181A
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Apparatus for forming tapered tubes
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US1429924A
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Method for bending pipes or tubes
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US1389856A
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Pipe-bending
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US1301221A
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Method for drawing rods and tubes of varying diameters.
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US1301220A
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Apparatus for drawing rods and tubes of varying diameters.
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US1298656A
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Apparatus for flanging pipes.
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CA275365A
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Golf stick
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