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US1899933A
|
|
Electric heater
|
|
US1675705A
|
|
Electric welding machine
|
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US1750643A
|
|
Welding copper and the like
|
|
US1688421A
|
|
Making hubs and the like
|
|
US1720323A
|
|
Flue expansion joint
|
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US1706982A
|
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Radiator
|
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US1718345A
|
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Boiler
|
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US1683047A
|
|
Method of forming axle housings
|
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US1634700A
|
|
Method and apparatus for making wheels
|
|
US1693067A
|
|
Making hubs
|
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US1675706A
|
|
Wheel nave and the like and method of forming it
|
|
US1665461A
|
|
Welding tubes to plates or cylinders
|
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US1689989A
|
|
Production of axle housings
|
|
US1674537A
|
|
Method of manufacturing spoked articles
|
|
US1648177A
|
|
Electric-welding apparatus
|
|
GB260358A
|
|
Improvements in or relating to steam boilers or the like
|
|
US1671641A
|
|
Controlling electric machines
|
|
US1726277A
|
|
Service-switch mechanism
|
|
US1583908A
|
|
Muffler and the like
|
|
US1656274A
|
|
Electric welding apparatus
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