CH78282A
(en )
1918-07-01
Process for the production of a tanning agent
CH79130A
(en )
1918-10-01
Process for the production of a tanning agent
CH78797A
(en )
1918-09-02
Process for the production of a tanning agent
CH79015A
(en )
1918-10-01
Process for the production of a tanning agent
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
CH75774A
(en )
1918-02-01
process for the production of a soap preparation
CH77250A
(en )
1919-02-02
Process for making a soap substitute
CH76185A
(en )
1917-11-01
Process for producing a detergent
CH73106A
(en )
1916-10-02
Process for the production of a leather substitute
CH76510A
(en )
1918-01-02
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
CH75877A
(en )
1917-10-01
Process for making a soap substitute
AT71274B
(en )
1916-02-25
Process for the production of a tanning agent.
AT98665B
(en )
1924-12-10
Process for the production of tanning substances.
CH79962A
(en )
1919-01-16
Process for the production of a lacquer
CH80533A
(en )
1919-03-17
Process for the production of a plastic
CH76592A
(en )
1918-01-16
Process for the production of fittings
CH81317A
(en )
1919-06-02
Process for the production of leather
CH82060A
(en )
1919-08-16
Process for the manufacture of a leather substitute
CH79494A
(en )
1918-12-02
Process for the manufacture of a leather substitute
CH76586A
(en )
1918-01-16
Process for the production of cork boards
CH75980A
(en )
1918-03-16
Process for the production of artificial leather
CH77110A
(en )
1918-08-01
Process for the production of artificial leather