US1347278A
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Method of electrically welding metal plates
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US1367552A
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Method of electric welding
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US1236091A
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Electric welding.
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US1236090A
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Electric riveting.
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US1189584A
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Apparatus for and method of electric fastening of metals.
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US1123309A
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Method of electric welding.
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US1252809A
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Apparatus for electric welding.
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US1123308A
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Method of electric welding.
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US1189583A
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Method of electric riveting.
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US1189582A
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Method of electric welding.
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US1189581A
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Method of and apparatus for electric welding of metallic plates.
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US1070966A
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Electric welding.
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US1123307A
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Synchronous rectifier.
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US955171A
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Exciting-alternator.
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US1027422A
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Induction synchronous motor.
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