CH55559A
(en )
1912-08-16
Method of treating soft vulcanized fiber for the purpose of making it suitable for use in shoe soles
AT104722B
(en )
1926-11-25
Process for the production of fertilizers.
CH69770A
(en )
1915-07-16
Process for making leather usable, in particular leather for footwear
CH75519A
(en )
1917-08-01
Method of treating tar for the manufacture of tar macadam
CH74521A
(en )
1917-03-01
Process for the production of outsoles for footwear using pieces of leather waste
AT107429B
(en )
1927-10-10
Process for the production of liquid, semi-solid or solid synthetic materials.
CH56855A
(en )
1912-11-16
Process for the production of artificial leather
CH68668A
(en )
1915-04-01
Process for the production of artificial sole leather
CH57771A
(en )
1913-02-01
Method of treating betulin to make it suitable for the manufacture of varnishes
CH65117A
(en )
1914-06-01
Method and device for the production of footwear soles
CH64699A
(en )
1914-04-16
Method of manufacturing frame straps for Mac-Kay footwear
AT71536B
(en )
1916-04-10
Method and device for building, pressing and pressing on heels consisting of leather patches stuck together on all kinds of footwear.
CH76686A
(en )
1918-06-17
Process for making wood usable as a leather substitute, in particular for shoe soles and the like
CH61925A
(en )
1913-10-16
Process for treating oleic acid with hydrogen
CH69327A
(en )
1915-06-16
Leather waste shoe heel and method of making the same
CH77117A
(en )
1918-03-01
Method for drying patent leather
CH77378A
(en )
1918-04-01
Method for drying patent leather
CH76313A
(en )
1917-12-01
Process for making shoes, boots, etc.
CH76550A
(en )
1918-01-16
Shoe sole covering, as well as method and device for its production
CH54720A
(en )
1912-06-17
Method and machine for the manufacture of rims for wooden pulleys
CH60964A
(en )
1913-09-01
Method and device for manufacturing seamless shoe uppers
CH71810A
(en )
1916-02-16
Process for the production of artificial leather
CH76085A
(en )
1917-11-01
Shoe sole and process for its manufacture
CH70774A
(en )
1915-11-01
Process for making rubber articles
AT80067B
(en )
1920-02-25
Process for tanning animal hides.