FR715999A
(en )
1931-12-12
Method and apparatus for crystallization
FR662569A
(en )
1929-08-08
Process for the production of hydrocyanic acid
FR692542A
(en )
1930-11-06
Process for the production of hydrocyanic acid
FR713261A
(en )
1931-10-24
Process for the preparation of acrylic acid
FR705580A
(en )
1931-06-10
Method and apparatus for the production of hydrocyanic acid
FR656108A
(en )
1929-04-26
Method and apparatus for the concentration of nitric acid
FR576838A
(en )
1924-08-27
Method and apparatus for the evaporation of concentrated solutions
FR36389E
(en )
1930-05-10
Process for the production of solid carbonic acid
FR697884A
(en )
1931-01-23
Method and apparatus for the continuous manufacture of highly concentrated sulfuric acid
FR672767A
(en )
1930-01-07
Method and apparatus for the manufacture of solid carbonic acid
FR709662A
(en )
1931-08-12
Electrolytic method and apparatus for the purification of acetic acid solutions and the like
FR699315A
(en )
1931-02-13
Method of stapling paper tubes and apparatus for the manufacture of tubes according to this process
FR698081A
(en )
1931-01-27
Method and apparatus for the production of bitumen from acid resin by-products
FR602516A
(en )
1926-03-20
Method and apparatus for the manufacture of sulfuric acid
FR701424A
(en )
1931-03-16
Improved process and apparatus for the production of phosphoric acid and calcium cyanamide
FR716839A
(en )
1931-12-28
Process for the production of nitric acid in high concentration
FR37923E
(en )
1931-02-07
Process for the production of aliphatic and cyclic primary amines
FR715893A
(en )
1931-12-10
Process for the production of beta-chloropropionic esters
FR644691A
(en )
1928-10-12
Method and device for the concentration of nitrogen acid
FR710646A
(en )
1931-08-27
Process and device for the purification of carbonic acid from fermentation
FR39297E
(en )
1931-10-12
Method and apparatus for continuous rectification of acetic acid
FR715052A
(en )
1931-11-25
Process for the production of prussic acid and its salts
FR721763A
(en )
1932-03-08
Process for the production of maleic acid and anhydride
FR628641A
(en )
1927-10-26
Process for the production of aliphatic and cyclic primary amines
FR669193A
(en )
1929-11-13
Method and apparatus for the concentration of nitrogen acid