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US3783230A
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Gun for welding tubes on a tube plate
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US3754114A
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Rotatable welding gun
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US3757076A
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Vacuum chamber with static mobile sealing joints
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CA935883A
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Self-centering clamp for butt-welding tubes
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US3782740A
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Centering chuck
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US3795429A
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Open ball bearing
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US3743812A
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Self-centering clamp for butt-welding tubes
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US3719791A
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Mobile fluid-tight sealing device
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CA928344A
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Self-centering clamp for welding, machining and checking cylindrical parts
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