CH78925A
(en )
1918-09-16
Process for the production of highly refractory bricks
CH76405A
(en )
1917-12-17
Process for the manufacture of refractory products
CH72251A
(en )
1916-04-17
Process for the production of highly refractory articles
CH75974A
(en )
1917-10-16
Process for the production of silicon carbide
CH76586A
(en )
1918-01-16
Process for the production of cork boards
CH75422A
(en )
1917-07-16
Process for the production of glazed asbestos-cement articles
CH75616A
(en )
1917-09-01
Process for the production of sodium perborate
CH79939A
(en )
1919-01-16
Process for the production of fibers
CH72628A
(en )
1916-06-16
Process for the production of antimonies
CH75534A
(en )
1917-08-01
Process for the production of etched figures
CH73574A
(en )
1916-10-16
Process for the production of oxygen
CH75875A
(en )
1917-10-01
Process for the production of potassium persulfate
CH76038A
(en )
1917-10-16
Process for the production of sodium amide
CH68153A
(en )
1915-02-16
Process for the production of fuel
AT76380B
(en )
1919-05-10
Process and system for the production of pre-doughs.
CH72174A
(en )
1916-04-17
Process for the production of enamels
CH76592A
(en )
1918-01-16
Process for the production of fittings
CH72366A
(en )
1916-10-16
Process for the production of tops
CH77932A
(en )
1918-06-17
Process for the production of calcium cyanamide
CH75333A
(en )
1917-12-01
Process for the production of etched embroidery
CH66000A
(en )
1914-08-01
Process for the production of incandescent bodies
CH72958A
(en )
1916-07-17
Process for the production of sodium percarbonate
CH76805A
(en )
1918-06-17
process for the production of nutrient pulp
CH79967A
(en )
1919-01-16
Process for the production of enamelled everyday objects
AT88401B
(en )
1922-05-10
Process for the production of zinc-lead paints.