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GB347723A
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Improvements relating to the manufacture of copper welded tubing- welded with copper
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GB300643A
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Improvements relating to the manufacture of metal tubes
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GB300272A
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Improvements in the manufacture of multi-ply strip metal stock
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GB299883A
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Tubing
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GB292507A
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Improvements in or relating to spiral finned tubing
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GB289430A
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Improvements in or relating to the manufacture of finned tubing
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GB291999A
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Improvements in or relating to metal tubing
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GB279050A
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Improvements in or relating to metal tubing
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GB243936A
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Improvements in tube soldering apparatus
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GB240687A
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An improved tubing
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GB238999A
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Improvements in a machine for tinning strips of metal
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GB229424A
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Improvements in the manufacture of soldered tubing
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GB229412A
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An improved method of forming metal tubes
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