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US1416883A
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Method of spot welding
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US1354293A
|
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Slug-welding
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US1296651A
|
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Method of securing together heavy steel plates.
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US1330800A
|
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Method of securing plates
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US1330241A
|
|
Method of joining metal
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CA188283A
|
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Electrical welding or riveting machine
|
|
GB120028A
|
|
Electric Welding and Riveting Apparatus.
|
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US1273203A
|
|
Method of electric welding.
|
|
US1267400A
|
|
Method of treating electrodes for electric welding.
|
|
US1355224A
|
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Chemical welding
|
|
US1267463A
|
|
Electrode for electric welding-machines.
|
|
US1267480A
|
|
Electric welding apparatus.
|
|
US1256951A
|
|
Cooling spot-welding electrode.
|
|
US1220997A
|
|
Combined spot and butt welder.
|
|
US1237915A
|
|
Electric welding apparatus.
|
|
US1234673A
|
|
Electric spot-welding apparatus.
|
|
US1228450A
|
|
Electric welding-machine.
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