CH76200A
(en )
1917-11-16
Process for retanning glacé leather
AT80091B
(en )
1920-02-25
Process for the preparation of caramel. Process for the preparation of caramel.
CH86573A
(en )
1920-09-01
Process for the production of gravure forms.
CH81317A
(en )
1919-06-02
Process for the production of leather
AT91349B
(en )
1923-02-26
Process for the production of leather.
CH75452A
(en )
1917-09-01
Process for processing glue leather into glue
CH77112A
(en )
1918-03-01
Process for making shoes
AT91345B
(en )
1923-02-26
Process for the production of iron leather.
CH82821A
(en )
1919-10-16
Process for the production of tempered steel fittings
AT80067B
(en )
1920-02-25
Process for tanning animal hides.
CH76373A
(en )
1917-12-01
Process for the preparation of glycolyl-p-phenetidide
CH77110A
(en )
1918-08-01
Process for the production of artificial leather
CH77381A
(en )
1918-09-02
Process for the production of artificial leather
CH75980A
(en )
1918-03-16
Process for the production of artificial leather
AT80065B
(en )
1920-02-25
Process for recycling chrome leather waste. Process for recycling chrome leather waste.
NL5086C
(en )
1920-07-01
Tanning method
CH79808A
(en )
1919-05-16
Process for tanning animal hides
CH75979A
(en )
1918-03-16
Process for the impregnation of rubber articles
CH76586A
(en )
1918-01-16
Process for the production of cork boards
CH75977A
(en )
1918-05-01
Method for drying patent leather
CH82059A
(en )
1919-08-16
Process for the production of leather substitutes
CH82062A
(en )
1919-08-16
Process for the production of leather substitutes
CH81781A
(en )
1919-07-16
Process for the production of full, flexible iron leather
CH80237A
(en )
1919-02-17
Process for neutralizing chrome leather
AT98665B
(en )
1924-12-10
Process for the production of tanning substances.