US1270290A
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Gray azo dyes.
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US1252452A
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Pharmaceutical product.
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US1256293A
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Bromodiethylacetylurethanes.
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US1201544A
|
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Red wool-dye.
|
US1199890A
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Wool-dye.
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US1201692A
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Pharmaceutical product containing arsenic and process of making same.
|
US1215359A
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Dyes and process of dyeing.
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US1179051A
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Process for producing ethylene from acetylene.
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US1191580A
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Phenylpropiolic-acid compounds containing arsenic.
|
US1178720A
|
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Physiologically-active bases.
|
US1244149A
|
|
Violet cotton-dye.
|
US1218656A
|
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Urea and thiourea compounds.
|
US1203642A
|
|
Color-lakes fast to light.
|
US1218232A
|
|
Blue triphenylmethane dye.
|
US1183378A
|
|
Azo dye and process of dyeing.
|
US1217446A
|
|
Substituted barbituric acids.
|
US1169329A
|
|
Blue-violet azo dye.
|
US1266092A
|
|
Yellowish-brown vat-dyes.
|
US1217447A
|
|
Substituted barbituric acids.
|
US1169344A
|
|
Blue disazo dye.
|