CH56096A
(en )
1912-10-01
Process for cleaning metal objects
CH66774A
(en )
1914-10-01
Process for cleaning metals
CH54192A
(en )
1912-05-01
Process for cleaning buildings
CH51158A
(en )
1911-08-01
Process for processing profiled objects
CH55562A
(en )
1912-09-02
Process for lining cylindrical objects with soft metal
CH66888A
(en )
1914-10-16
Method of spraying barrels
CH61744A
(en )
1913-10-16
Process for hardening metals
CH67012A
(en )
1914-11-02
Process for decarburizing metals
CH72381A
(en )
1916-05-01
Process for pickling pelts
CH66129A
(en )
1914-08-17
Process for cleaning Twitchell reactive
CH48976A
(en )
1910-12-16
Process for making objects having metal surfaces bright
CH58618A
(en )
1913-03-17
Method of cleaning clothes from grease stains
CH68864A
(en )
1915-05-01
Method of painting
CH60976A
(en )
1913-09-01
Process for bleaching flour
CH60548A
(en )
1913-07-16
Process for processing waste paper
CH75890A
(en )
1917-10-01
Process for detinning tinplate waste
CH56316A
(en )
1912-10-16
Device for cleaning shop windows
CH60778A
(en )
1913-08-16
Process for mincing meat
CH57062A
(en )
1912-12-02
Process for de-enamelling enamelled objects
AT75538B
(en )
1919-02-25
Process for cleaning liquids.
CH72856A
(en )
1916-07-17
Process for drawing thin-walled pipes
CH63551A
(en )
1914-02-02
Apparatus for cleaning laundry
AT89325B
(en )
1922-09-11
Process for coloring metal surfaces.
FR427088A
(en )
1911-07-26
Cleaning process
CH54307A
(en )
1912-05-01
Procedure for removing rust stains