US1650144A
|
|
Method of repairing cracked or broken structures by welding
|
US1559342A
|
|
Method of and apparatus for purifying molten metal
|
US1634675A
|
|
Method of electric welding
|
US1634674A
|
|
Method of connecting metallic elements
|
US1632411A
|
|
Welding tool
|
US1554361A
|
|
Method of repairing cracked or broken structures by welding
|
US1559341A
|
|
Rust-producing compound
|
US1572740A
|
|
Method of and apparatus for electric welding
|
US1559901A
|
|
Method of repairing cracked or broken structures by electric welding
|
US1592609A
|
|
Method of repairing broken metallic structures by welding
|
US1612980A
|
|
Truck for supporting electric welding apparatus
|
US1443798A
|
|
Welder's tongs
|
US1437257A
|
|
Process of welding and apparatus therefor
|
US1361269A
|
|
Electrode for electric welding
|