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US2974217A
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Method and apparatus for electric welding pipe and the like
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US3076884A
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Apparatus for induction brazing of metal tubing
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US2823294A
|
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Squeeze roll assembly
|
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US2886690A
|
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Method and apparatus for induction brazing of metal tubing
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US2845038A
|
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Seam guide assembly
|
|
US2769887A
|
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High speed induction welding
|
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US2769886A
|
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Induction heating and welding
|
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US2936357A
|
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Manufacture of metal sheathed cable and the like
|
|
US2794893A
|
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Induction welding
|
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US2687465A
|
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High-frequency induction tube welding
|
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US2817364A
|
|
Welded tubing
|
|
US2687464A
|
|
High-frequency induction tube welding
|
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US1891620A
|
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Pole structure
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CA123161A
|
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Air brake mechanism
|
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US908648A
|
|
Air-brake attachment.
|
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CA679632A
|
|
Sheathing and welding of metal sheathed cable and the like
|
|
CA586112A
|
|
Induction heating and welding
|
|
CA586113A
|
|
High speed induction welding
|
|
CA578895A
|
|
Welded tubing
|
|
CA526771A
|
|
High frequency induction tube welding
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