FR591799A
(en )
1925-07-17
Method and device for extracting air and water from paper pulp
FR648640A
(en )
1928-12-12
Device for arithmetic evaluation of punch cards
FR817110A
(en )
1937-08-26
Method and device for extracting water from air in the vapor state
FR660749A
(en )
1929-07-16
Process and device for extracting water from webs of paper, cellulose, and the like, during manufacture
FR656310A
(en )
1929-05-06
Method and device for filtering liquids tending to coagulate
SU13045A1
(en )
1930-03-31
Apparatus for the extraction of gold from weak solutions
FR650022A
(en )
1928-12-31
Process for removing water from pulp or the like and drying them
FR649287A
(en )
1928-12-20
Method and device for removing the last leaf from a pile of leaves held in vertical guides
FR601129A
(en )
1926-02-23
Method and device for making paper
FR648151A
(en )
1928-12-06
Method and device for obtaining yeasts
FR633877A
(en )
1928-02-06
Method and device for simultaneously obtaining a compression and a vacuum
FR616164A
(en )
1927-01-25
Process for removing ink stains from paper
FR611536A
(en )
1926-09-30
Device for automatically extracting air from siphons
FR598120A
(en )
1925-12-07
Method and device for cleaning and preserving extraction cables
FR543679A
(en )
1922-09-07
Method and apparatus for recovering pulp and the like from waste water from papermaking machines
FR596133A
(en )
1925-10-16
Process for extracting the coloring matter from henna leaves and installation for its realization
FR814175A
(en )
1937-06-17
Method and device for increasing the action of the last wet press of paper machines and the like
FR605203A
(en )
1926-05-21
Method for distinguishing fine emerald from fake emerald and apparatus for using this method
FR644029A
(en )
1928-10-01
Device for extracting air from centrifugal pumps
FR595081A
(en )
1925-09-25
Extraction device for mechanical suspension dryer
FR726793A
(en )
1932-06-03
Method and apparatus for extracting and collecting secretions from trees
FR708142A
(en )
1931-07-20
Device for separating water from compressed air
FR670162A
(en )
1929-11-26
Device for automatically closing the basins of presses and similar machines
FR606194A
(en )
1926-06-09
Process for extracting cellulose from used tarpaulins, rags and other similar debris
FR578161A
(en )
1924-09-19
Hearing detection device for long wavelengths