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US2222669A
|
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Electrode structure
|
|
US2090946A
|
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Alloy metal
|
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US2120562A
|
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Refractory material and process of making same
|
|
US2120561A
|
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Composite metallic bodies
|
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US2018073A
|
|
Electrode or contact mechanism
|
|
US2044853A
|
|
Method of making cutting tools, dies, etc.
|
|
US1922498A
|
|
Method and machine for making wire-drawing dies, etc.
|
|
US1891050A
|
|
Electrical contact
|
|
US1922497A
|
|
Method and machine for making wire-drawing dies, etc.
|
|
US1842103A
|
|
Refractory materiai
|
|
US1828493A
|
|
Disk valve for burners
|
|
US1853568A
|
|
Burner
|
|
US1877431A
|
|
Head for beading machines
|
|
US1997694A
|
|
Basing machine
|
|
US1936426A
|
|
Sealing-off and dumping mechanism for exhaust machines
|
|
US1874575A
|
|
Grid winding machine
|
|
US1989236A
|
|
Composite wire
|
|
US1788243A
|
|
Face plate for electrical contact
|
|
US1741016A
|
|
Stem-making machine for radiotubes and the like
|
|
US1819597A
|
|
Combined machine for exhausting, bombarding, and sealing off radiotubes, lamp bulbs, and the like
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