CH82006A
(en )
1919-08-16
Process and furnace for the calcination of carbonates
FR521891A
(en )
1921-07-21
Process for the preparation of pyridic bases
FR520715A
(en )
1921-06-29
Method and apparatus for the production of yarns
FR501255A
(en )
1920-04-08
Process for the construction of brick walls
FR495793A
(en )
1919-10-17
Process and apparatus for the manufacture of cyanamide
CH75678A
(en )
1917-09-01
Process and furnace for the refining of volatile metals
FR490959A
(en )
1919-05-17
Method for the purification of anthraquinone
FR497467A
(en )
1919-12-06
Process for the manufacture of methyl chloroformate
FR491023A
(en )
1919-05-19
Process for the purification of aluminous materials
FR524751A
(en )
1921-09-10
Process for the manufacture of cartridge cases
FR488359A
(en )
1918-09-17
Enfleurage process
CH78925A
(en )
1918-09-16
Process for the production of highly refractory bricks
FR517801A
(en )
1921-05-12
Process for the manufacture of corks
FR490066A
(en )
1919-04-01
Process for the manufacture of coke for metallurgical and other applications
FR500145A
(en )
1920-03-03
Method and apparatus for the production of nitrogen oxide
FR498643A
(en )
1920-01-16
Process and apparatus for the manufacture of hydrochlorides
FR486748A
(en )
1918-05-01
Coal shale treatment process for the manufacture of construction materials
FR485768A
(en )
1918-02-06
Brick firing process
FR489388A
(en )
1919-01-27
Process for the artificial reconstitution of coal
FR519557A
(en )
1921-06-11
Process for the construction of hollow partitions
FR496756A
(en )
1919-11-15
Explosive and process for its manufacture
FR518637A
(en )
1921-05-28
Process for the manufacture of thermoelectric elements
FR513671A
(en )
1921-02-21
Process for the production of ferro-tungsten
FR523246A
(en )
1921-08-13
Method and device for the manufacture of crucibles
CH78236A
(en )
1918-12-16
Process for the treatment of peat