CH57094A
(en )
1912-12-16
Process for case hardening iron and steel objects
CH60587A
(en )
1913-08-01
Process for cementing and hardening iron and steel
CH61744A
(en )
1913-10-16
Process for hardening metals
CH41606A
(en )
1908-11-02
Process for tinning cast iron
AT68041B
(en )
1915-02-25
Process and device for deoxidizing or finishing mild steel.
CH67012A
(en )
1914-11-02
Process for decarburizing metals
CH79829A
(en )
1919-01-16
Process for the recovery of iron and steel waste
CH48976A
(en )
1910-12-16
Process for making objects having metal surfaces bright
AT82872B
(en )
1921-02-25
Electrolytic process for removing oxide or rust from the surface of iron and steel objects.
CH72381A
(en )
1916-05-01
Process for pickling pelts
CH57550A
(en )
1913-01-16
Method for hardening and waterproofing animal hides
CH56096A
(en )
1912-10-01
Process for cleaning metal objects
CH62831A
(en )
1913-12-16
Method and apparatus for finishing the edges of pieces of leather
CH75890A
(en )
1917-10-01
Process for detinning tinplate waste
CH41454A
(en )
1908-10-16
Process for deoxidizing and carbonizing liquid iron
CH68606A
(en )
1915-04-01
Method for hardening cotton oil
CH55562A
(en )
1912-09-02
Process for lining cylindrical objects with soft metal
CH41626A
(en )
1908-11-02
Method of forming cast iron pillars
CH74761A
(en )
1917-04-02
Process for welding embedded rails or other fixed workpieces
CH65141A
(en )
1914-10-16
Method of pickling hides and skins
CH61243A
(en )
1913-09-16
Insert box for cementing and annealing iron and steel
AT46589B
(en )
1911-02-25
Method of welding cast iron.
CH59939A
(en )
1913-06-16
Process and high pressure furnace for direct iron and steel production
AT71252B
(en )
1916-02-25
Method of loading stoves.
CH59169A
(en )
1913-05-02
Process for tanning rabbit fur