CH75777A
(en )
1918-01-16
Process for the manufacture of a leather substitute
CH77251A
(en )
1918-03-16
Process for the manufacture of a leather substitute
CH79494A
(en )
1918-12-02
Process for the manufacture of a leather substitute
CH82060A
(en )
1919-08-16
Process for the manufacture of a leather substitute
CH73106A
(en )
1916-10-02
Process for the production of a leather substitute
CH79015A
(en )
1918-10-01
Process for the production of a tanning agent
CH79130A
(en )
1918-10-01
Process for the production of a tanning agent
CH78282A
(en )
1918-07-01
Process for the production of a tanning agent
CH78797A
(en )
1918-09-02
Process for the production of a tanning agent
CH77250A
(en )
1919-02-02
Process for making a soap substitute
CH76510A
(en )
1918-01-02
Process for making a soap substitute
CH75877A
(en )
1917-10-01
Process for making a soap substitute
CH76328A
(en )
1917-12-01
Process for making a soap substitute
CH81566A
(en )
1919-09-01
Process for making a soap substitute
CH75657A
(en )
1917-09-01
Process for the production of a sole leather substitute material
CH76185A
(en )
1917-11-01
Process for producing a detergent
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
CH80533A
(en )
1919-03-17
Process for the production of a plastic
CH81317A
(en )
1919-06-02
Process for the production of leather
CH75554A
(en )
1917-08-16
Process for the production of an artificial fertilizer
CH75774A
(en )
1918-02-01
process for the production of a soap preparation
CH79966A
(en )
1919-06-02
Process for the production of a leather substitute from intestines
CH77919A
(en )
1918-06-01
Process for the production of footwear running parts