1

Automatic Electric Welding Machines

Year:
1890
Language:
english
File:
PDF, 1.89 MB
english, 1890
2

Discussion

Year:
1930
Language:
english
File:
PDF, 593 KB
english, 1930
3

Discussion

Year:
1899
Language:
english
File:
PDF, 361 KB
english, 1899
4

Local Annealing of Hard Faced Armor Plates

Year:
1895
Language:
english
File:
PDF, 3.14 MB
english, 1895
5

Letters to the editor

Year:
1963
Language:
english
File:
PDF, 865 KB
english, 1963