CH77545A
(en )
1918-05-01
Method of treating vulcanized fibers
CH77220A
(en )
1918-03-16
Method of making briquettes
CH76930A
(en )
1918-02-16
Method of making slippers
CH76306A
(en )
1917-12-01
Method of making embroidery
CH81893A
(en )
1919-08-01
Method of making embroidery
CH77094A
(en )
1918-03-01
Method of making briquettes
CH78070A
(en )
1918-11-01
Method of making briquettes
CH75029A
(en )
1917-05-16
Method of making briquettes
CH77382A
(en )
1918-04-16
Method of making stone wood
CH79939A
(en )
1919-01-16
Process for the production of fibers
CH73900A
(en )
1916-12-01
Method of making briquettes
CH59678A
(en )
1913-06-02
Method of treating water
CH76823A
(en )
1918-02-01
Method and device for the production of shoe protectors
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
CH76373A
(en )
1917-12-01
Process for the preparation of glycolyl-p-phenetidide
CH75519A
(en )
1917-08-01
Method of treating tar for the manufacture of tar macadam
CH75979A
(en )
1918-03-16
Process for the impregnation of rubber articles
CH77232A
(en )
1918-03-16
Process for the production of textile fibers
CH76802A
(en )
1918-07-01
Method of tightening intestines
CH77112A
(en )
1918-03-01
Process for making shoes
CH76792A
(en )
1918-07-01
Method of making underwear with embroidery
CH75535A
(en )
1917-12-01
Method of draining peat
CH82821A
(en )
1919-10-16
Process for the production of tempered steel fittings