AT87472B
(en )
1922-02-25
Method of concentration of nitric acid.
CH73573A
(en )
1916-10-16
Method of concentrating nitric acid
CH86573A
(en )
1920-09-01
Process for the production of gravure forms.
CH77220A
(en )
1918-03-16
Method of making briquettes
CH76149A
(en )
1917-11-01
Process for the preparation of 6-oxy-2-phenylpyridine-5-carboxylic acid (2-phenylpyridone-5-carboxylic acid)
CH79146A
(en )
1918-10-01
Method of making briquettes
CH67430A
(en )
1914-12-01
Method for the concentration of dilute nitric acid
CH76930A
(en )
1918-02-16
Method of making slippers
CH77094A
(en )
1918-03-01
Method of making briquettes
CH75029A
(en )
1917-05-16
Method of making briquettes
CH78070A
(en )
1918-11-01
Method of making briquettes
CH77097A
(en )
1918-03-01
Method of saving fuel
CH82821A
(en )
1919-10-16
Process for the production of tempered steel fittings
CH76373A
(en )
1917-12-01
Process for the preparation of glycolyl-p-phenetidide
AT89300B
(en )
1922-08-25
Process for the extraction of pectin substances.
CH78765A
(en )
1918-09-02
Method of making briquettes
CH80786A
(en )
1919-04-01
Method of making masonry
CH56595A
(en )
1912-11-16
Process for the preparation of concentrated nitric acid
CH80964A
(en )
1919-09-16
Process for the production of high percentage solutions of calcium nitrate
CH76306A
(en )
1917-12-01
Method of making embroidery
CH75975A
(en )
1917-10-16
Process for the preparation of 1: 6-dioxynaphtoylbenzoic acid
CH73900A
(en )
1916-12-01
Method of making briquettes
CH78277A
(en )
1918-11-01
Process for the preparation of benzoic acid sulfinide
CH80966A
(en )
1919-04-16
Process for the preparation of 2-thienylquinoline-4-carboxylic acid
AT88400B
(en )
1922-05-10
Process for the production of chlorosulfonic acid.