AT91349B
(en )
1923-02-26
Process for the production of leather.
CH81317A
(en )
1919-06-02
Process for the production of leather
CH75980A
(en )
1918-03-16
Process for the production of artificial leather
CH77110A
(en )
1918-08-01
Process for the production of artificial leather
CH77381A
(en )
1918-09-02
Process for the production of artificial leather
AT91345B
(en )
1923-02-26
Process for the production of iron leather.
AT98665B
(en )
1924-12-10
Process for the production of tanning substances.
CH77919A
(en )
1918-06-01
Process for the production of footwear running parts
CH81781A
(en )
1919-07-16
Process for the production of full, flexible iron leather
CH76586A
(en )
1918-01-16
Process for the production of cork boards
CH79743A
(en )
1919-01-02
Process for the production of leather by means of iron salts
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
AT88401B
(en )
1922-05-10
Process for the production of zinc-lead paints.
CH71810A
(en )
1916-02-16
Process for the production of artificial leather
CH77112A
(en )
1918-03-01
Process for making shoes
AT88464B
(en )
1922-05-26
Process for the production of alkali cyanate.
AT88463B
(en )
1922-05-26
Process for the production of cyanate alkali.
AT98925B
(en )
1924-12-27
Process for the manufacture of cartridge cases.
CH75875A
(en )
1917-10-01
Process for the production of potassium persulfate
CH79342A
(en )
1919-03-17
Process for the production of artificial leather
CH79811A
(en )
1919-01-16
Process for the production of artificial leather
CH82059A
(en )
1919-08-16
Process for the production of leather substitutes
CH66042A
(en )
1914-08-01
Process for the production of leather