Improvements in closed contour section metal profiles assemblies (Machine-translation by Google Translate, not legally binding)
ES263513A1
Procedure and device for side welding, especially of metallic profiles of closed contour section (Machine-translation by Google Translate, not legally binding)
ES260598A1
A method of making a frame of thermosetting plastic material
GB881642A
Method of assembling sectional members by high frequency induction bonding
ES256298A1
Assembly procedure of high frequency welded profiles (Machine-translation by Google Translate, not legally binding)
