1 ore 1 gen 1928 anni - First Thermite joint weld
Descrizione:
Attempts to joint weld tram rails were successful at the beginning of the 20th century, the first railroad tracks were also continuously welded in 1928 for the German Reichsbahn.
Aggiunto al nastro di tempo:
Data:
1 ore 1 gen 1928 anni
Adesso
~ 96 years ago