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US1908876A
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Method and means for recovering values from ore dumps
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US1573784A
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Process of tempering metals and other materials
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US1572975A
|
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Method of heating metal, glass, or other material to render the same workable
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US1430773A
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Method and apparatus for freeing the bottoms of vessels from barnacles and the like
|
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US1430772A
|
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Chemical cartridge
|
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US1403461A
|
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Apparatus for underground-animal extermination
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US1498823A
|
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Method of chlorinating pools and filming the surface thereof
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US1400393A
|
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Apparatus for chlorin control
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US1401293A
|
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Portable chlorin-dispenser
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US1401292A
|
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Method of diffusing and disseminating poisonous gases
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US1405467A
|
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Ore stamp mill
|
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US1400107A
|
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chlorination apparatus
|
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US1419653A
|
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Portable apparatus for generating poisonous gases
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US1399829A
|
|
Method of producing poisonous gases
|
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US1444815A
|
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Percussion apparatus
|
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US762774A
|
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Apparatus for the concentration of minerals by means of oil.
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