CH81361A
(en )
1919-11-01
Process for the operation of multi-stage jet devices for compressing gases or vapors
CH259820A
(en )
1949-02-15
Process for removing hydrogen or oxygen from gas mixtures.
CH80578A
(en )
1919-08-01
Process for the operation of gear drives
CH78964A
(en )
1918-09-16
Process for smelting smelting materials
CH78516A
(en )
1918-08-01
Procedure for unloading and reloading gas retorts
CH81398A
(en )
1919-11-17
Process for the extraction of minerals
CH82032A
(en )
1919-08-16
Process for roasting fibrous materials
AT87512B
(en )
1922-03-10
Equipment for the operation of furnaces.
CH76259A
(en )
1917-11-16
Equipment for the operation of metal vapor rectifiers
CH80401A
(en )
1919-07-16
Process for drying potatoes
CH79648A
(en )
1918-12-16
Process for evaporation of liquids
ES67403A1
(en )
1918-08-01
A method of electrically treating gases and vapors.
CH80880A
(en )
1919-09-01
Process for compressing air or charge mixture for gas turbines
FR519709A
(en )
1921-06-14
Process for treating residues from fruits and vegetables
CH81994A
(en )
1919-08-16
Process for treating mill products
AT88456B
(en )
1922-05-10
Process for the production of perylene.
AT91372B
(en )
1923-02-26
Process for the extraction of low-boiling hydrocarbons from natural gases.
CH79066A
(en )
1918-10-01
Process for the extraction of oil
CH80805A
(en )
1919-04-01
Device for cleaning cutlery
CH78851A
(en )
1918-09-02
Process for the production of carbon electrodes by carbons from carbonaceous substances
CH79596A
(en )
1919-04-01
Impeller pump for compressing gases or air
CH79390A
(en )
1919-04-01
Impeller pump for compressing gases or air
CH81158A
(en )
1919-10-16
Process for descaling wires, tubes and the like by means of a sandblasting blower
CH81096A
(en )
1919-10-01
Process for briquetting fuels
FR520529A
(en )
1921-06-27
Ore concentration process