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GB539292A
|
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Improvements in metal poles or posts
|
|
GB504589A
|
|
An improved backing device for use in welding metal pipes and the like
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US2140384A
|
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Machine for trimming and/or beveling the edges of metal plates
|
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GB497870A
|
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Improvements in the construction of metal poles and the like
|
|
US2017003A
|
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Art of electric arc welding
|
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US2110378A
|
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Manufacture of pipes and the like from sheet metal
|
|
US1963553A
|
|
Art of electric arc welding
|
|
US1949685A
|
|
Automatic control device for electric arc welding and other apparatus
|
|
GB389561A
|
|
Improvements in and relating to the manufacture of wire mesh and the like for concrete reinforcement and other purposes
|
|
US1915184A
|
|
Manufacture of wire mesh and the like for concrete reenforcement and other purposes
|
|
US1928534A
|
|
Means for manufacturing concrete pipe reenforcements and the like
|
|
AU2839030B
|
|
Improved method of and means for manufacturing concrete pipe reinforcements andthe like
|
|
GB331143A
|
|
Improvements relating to the manufacture or lining of pipes by centrifugal action
|
|
ES111295A1
|
|
Improvements in the manufacture or coating of tubes by centrifugal action.
|
|
GB329284A
|
|
Improvements relating to the manufacture or lining of pipes by centrifugal action
|
|
US1785586A
|
|
Manufacture or lining of pipes by centrifugal action
|
|
US1878760A
|
|
Method of and apparatus for use in the manufacture of metallic meshing, netting, andlike fabric
|
|
GB258036A
|
|
Improvements relating to flux materials for use in arc welding and methods of coating electrodes therewith
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CA354422A
|
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Sheet metal pipe manufacture
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CA351055A
|
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Electric arc welding apparatus
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