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GB115917A
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Improvements in Process of Making Copper Alloys.
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CA178183A
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Metallic alloy
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US1246571A
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Process of making metallic alloys.
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CA160206A
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Plating method
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CA157626A
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Copper refining process
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CA157625A
|
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Copper refining method
|
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GB191205445A
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|
Improvements in Remelting and Refining Old or Scrap Copper Alloy.
|
|
CA136228A
|
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Manufacture of metallic manganese and calcium fluoride
|
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CA81186A
|
|
Gas regulator
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US711389A
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|
Gas-stove.
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US697461A
|
|
Gas-burner.
|
|
US701025A
|
|
Gas-burner.
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|
US688611A
|
|
Acetylene-gas generator.
|
|
GB189909156A
|
|
Improvements in and connected with the Manufacture of Calcic Carbide and Illuminating and Heating Gases.
|
|
US638221A
|
|
Acetylene-gas-generating lamp.
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|
US628929A
|
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Acetylene-gas generator.
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