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US2268656A
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Steam jet ejector
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US2214211A
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Process for producing zirconium metal
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US2235508A
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Process for producing alloys containing zirconium
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US2215112A
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Apparatus for producing a uniform sliver of continuous rayon filaments
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US2252361A
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Aluminum alloy rivet
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US2230592A
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Process of preparing magnesia and sulphur dioxide
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US2251088A
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Process for the production of alloys containing beryllium
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US2257163A
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Synthetic resin stable against dilute acids and alkalies
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US2231892A
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Animalizing textile product
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US2245155A
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Process for the production of substantially stable fused saltpeter baths
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US2252279A
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Manufacture of sulphur dioxide and portland cement from calcium sulphate and the usual additions containing aluminum silicate
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US2248459A
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High frequency sound generator
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US2291718A
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Viscose spinning process
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US2248472A
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Process for removing silica from argillaceous alumino-silicates
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US2261313A
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Process for uniting materials of polymerized vinylchloride with wood, leather, or the like
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US2237017A
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Attaching gelatin layers to supports of polymerized vinylchloride
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US2260513A
|
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Manufacture of curled artificial fibers
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US2242497A
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Process of removing silica from minerals, slags, and similar materials
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US2259403A
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Process for the production of beryllium chloride
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US2293297A
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Squeezing device for plastic and semplastic masses
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