CH67104A
(en )
1914-11-02
Process for bittering malt extracts
AT70927B
(en )
1916-01-10
Method for bracing construction pits.
AT89325B
(en )
1922-09-11
Process for coloring metal surfaces.
CH72381A
(en )
1916-05-01
Process for pickling pelts
AT71089B
(en )
1916-02-10
Process for pickling hollow bodies.
CH75890A
(en )
1917-10-01
Process for detinning tinplate waste
CH67012A
(en )
1914-11-02
Process for decarburizing metals
CH71490A
(en )
1916-01-17
Process for decorating sheet metal
AT71198B
(en )
1916-02-25
Method for enlarging transport barrels.
CH56096A
(en )
1912-10-01
Process for cleaning metal objects
CH72856A
(en )
1916-07-17
Process for drawing thin-walled pipes
AT68005B
(en )
1915-02-25
Process for rolling metal.
CH67915A
(en )
1915-02-01
Process for softening water
CH66328A
(en )
1914-10-16
Process for liming hides
CH75755A
(en )
1918-02-16
Method for dividing containers
AT87466B
(en )
1922-02-25
Process for enamelling iron objects.
AT88455B
(en )
1922-05-26
Method of purifying anthraquinone.
CH66774A
(en )
1914-10-01
Process for cleaning metals
AT87446B
(en )
1922-02-25
Method of cleaning clay by flooding.
CH54192A
(en )
1912-05-01
Process for cleaning buildings
CH64302A
(en )
1914-03-16
Method for sealing vessels
AT75550B
(en )
1919-02-25
Process for processing quicklime.
CH74133A
(en )
1917-01-16
Process for the regeneration of base exchange materials
CH79829A
(en )
1919-01-16
Process for the recovery of iron and steel waste
AT71280B
(en )
1916-02-25
Process for mechanical digestion of grain.