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US1687605A
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Apparatus for making multiply strip stock
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US1685270A
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Method of making finned tubing
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US1710042A
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Method of making finned tubing
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US1685269A
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Method and apparatus for making tubing
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US1605326A
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Soldering apparatus
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US1650321A
|
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Composite tubing
|
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US1599164A
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Machine for cutting and forming metal shapes
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US1531730A
|
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Tube-soldering apparatus
|
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US1526899A
|
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Metal-coating machine
|
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US1537405A
|
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Method of making double tubes
|
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US1537404A
|
|
Tubing
|
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US1506971A
|
|
Tube and method of making tubes
|
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US1475258A
|
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Method of manufacturing soldered tube
|
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US1476796A
|
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Machine for forming tubes
|
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US1465755A
|
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Method of making tubes
|
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US1431368A
|
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Tubing
|
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US1488585A
|
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Tubing
|
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US1381964A
|
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Steering-wheel
|
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US1375128A
|
|
Steering-wheel
|
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US1396990A
|
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Steering-wheel
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