|
US2529874A
|
|
Process for manufacturing ammonium salts and magnetic iron oxide from solutions of ferrous salts
|
|
US2462499A
|
|
Process for recovering manganese values from manganese ores
|
|
US2448767A
|
|
Process of hydroxyethylation
|
|
US2307270A
|
|
Building material
|
|
US2322134A
|
|
Process for recovery of by-products from waste pickle liquors
|
|
GB491351A
|
|
Manufacture of benzyl-oxyalkyl and hydroxyalkyl ethers of cinchona alkaloids
|
|
GB491349A
|
|
Benzyl-oxyalkyl aromatic sulphonates, and method of preparation
|
|
US2033555A
|
|
Purification of apocupreine
|
|
GB453202A
|
|
Improvement in sulphur cement
|
|
US2033515A
|
|
Apocupreine and apocupreine derivatives
|
|
US1885888A
|
|
Method of carroting fur
|
|
US1885887A
|
|
Method of carroting fur
|
|
CA415915A
|
|
Benzyl-oxyalkyl aromatic sulphonate
|
|
CA418897A
|
|
Benzyl-oxyalkyl and hydroxyalkyl ether of cinchona alkaloid
|
|
CA418898A
|
|
Benzyl-oxyalkyl and hydroxyalkyl ether of cinchona alkaloid
|
