FR501524A
(en )
1920-04-16
Method and apparatus for obtaining bitumens from shale and the like
CH81906A
(en )
1919-08-01
Method and apparatus for the distillation of wood and peat
FR491075A
(en )
1919-05-20
Method and apparatus for measuring the pitch of threads
FR21055E
(en )
1920-03-19
Method and apparatus for the distillation of glycerin
FR495038A
(en )
1919-09-26
Method and apparatus for the distillation of glycerin
FR500508A
(en )
1920-03-16
Method and apparatus for the distillation of wood or other material
FR491328A
(en )
1919-05-30
Method and apparatus for the continuous and automatic distillation of wood
FR508658A
(en )
1920-10-20
Method and apparatus for the production of an imitation of oak wood
FR490934A
(en )
1919-05-15
Method and apparatus for ozone aging of wood
FR521356A
(en )
1921-07-11
Method and apparatus for fractional distillation
CH79336A
(en )
1919-08-01
Method and apparatus for fractional distillation
FR484825A
(en )
1917-11-13
Method and apparatus for the distillation of coal tar
FR521624A
(en )
1921-07-16
Method and apparatus for relieving pumps
FR504735A
(en )
1920-07-13
Method and apparatus for the industrial manufacture of triphenylarsine
FR494340A
(en )
1919-09-05
Method and apparatus for massage
FR491476A
(en )
1919-06-04
Method and apparatus for refining camphor
FR498286A
(en )
1920-01-07
Method and apparatus for the recovery of solvents
FR504068A
(en )
1920-06-24
Method and apparatus for the treatment of sludge
FR493150A
(en )
1919-07-31
Method and apparatus for mechanically reducing peat to fragments
FR496753A
(en )
1919-11-15
Method and apparatus for the treatment of wulfenite
FR515721A
(en )
1921-04-06
Method and apparatus for the distillation of mixtures of liquids
FR532336A
(en )
1922-02-01
Method and device for the continuous distillation of wood
FR491475A
(en )
1919-06-04
Method and apparatus for purifying camphor
FR521446A
(en )
1921-07-13
Method and apparatus for spraying materials
FR494685A
(en )
1919-09-16
Method and apparatus for the manufacture of belts