CH76200A
(en )
1917-11-16
Process for retanning glacé leather
CH86573A
(en )
1920-09-01
Process for the production of gravure forms.
CH78400A
(en )
1918-12-02
Process for briquetting fuel waste
AT91349B
(en )
1923-02-26
Process for the production of leather.
AT78737B
(en )
1919-10-25
Process for the production of workpiece leather from waste leather.
CH80237A
(en )
1919-02-17
Process for neutralizing chrome leather
CH79829A
(en )
1919-01-16
Process for the recovery of iron and steel waste
CH75452A
(en )
1917-09-01
Process for processing glue leather into glue
AT80067B
(en )
1920-02-25
Process for tanning animal hides.
AT75550B
(en )
1919-02-25
Process for processing quicklime.
AT82952B
(en )
1921-02-25
Process for creating chains.
CH81317A
(en )
1919-06-02
Process for the production of leather
AT91345B
(en )
1923-02-26
Process for the production of iron leather.
AT63555B
(en )
1914-02-25
Process for the aftertreatment of iron-tanned leather.
FR513795A
(en )
1921-02-23
Process for using waste leather
CH82821A
(en )
1919-10-16
Process for the production of tempered steel fittings
CH65740A
(en )
1914-07-16
Process for drying patent leather
CH75618A
(en )
1917-09-01
Process for the production of leather by means of iron salts
CH74849A
(en )
1917-04-16
Process for the production of leather by means of iron salts
CH74848A
(en )
1917-04-16
Process for the production of leather by means of iron salts
CH79743A
(en )
1919-01-02
Process for the production of leather by means of iron salts
ES63396A1
(en )
1916-12-16
Improved rapid tanning process for conditioning tanned hides.
CH75948A
(en )
1917-10-01
Process for processing bituminous materials, especially peat
ES51914A1
(en )
1912-03-01
A process for the manufacture of chrome tanned leather.
CH78798A
(en )
1918-09-02
Process for the partial tinning of sheet metal