FR779196A
(en )
1935-03-30
Liquid purification device
FR714072A
(en )
1931-11-06
Device for the conservation and flow of soft materials
FR761835A
(en )
1934-03-28
Device hindering the flow of liquids in one direction and its application to inkwells
FR47829E
(en )
1937-07-31
Device for the storage and distribution of liquids
FR714108A
(en )
1931-11-07
Liquid injection and flow device
FR687870A
(en )
1930-08-14
Automatic shut-off device in the flow of liquids
FR783450A
(en )
1935-07-12
Device for writing in the dark
FR784847A
(en )
1935-07-25
Method and device for the concentration of liquids and solutions in single or multi-stage evaporation plants
FR834672A
(en )
1938-11-29
Improvements to the intermittent and automatic flow of various materials
FR745955A
(en )
1933-05-20
Device facilitating the entry and exit of vessels in the basins
FR725513A
(en )
1932-05-13
Advertising and timekeeping device
FR746182A
(en )
1933-05-23
Device for illuminated advertising in the dark and for decorative applications
FR730917A
(en )
1932-08-26
Improvements in the purification of septic tank liquids and the like
FR757856A
(en )
1934-01-05
Belt and feet assembly device applicable to furniture to facilitate dismantling
FR765504A
(en )
1934-06-12
Improvements in refining liquid hydrocarbons
FR771019A
(en )
1934-09-28
Improvements in methods for restricting the flow of liquids in a single direction, and corresponding apparatus
FR786002A
(en )
1935-08-24
Device to facilitate reading of instruments in the laboratory
FR738352A
(en )
1932-12-24
Device for obtaining embossings and perforations in the case of typing or ordinary handwriting
FR750951A
(en )
1933-08-24
Device for the production and use of ozone
FR752601A
(en )
1933-09-27
Combination device serving as container and application device
FR734012A
(en )
1932-10-14
Portable device for all liquids and in particular for ink or dye erasing liquids
FR697743A
(en )
1931-01-21
Device for measuring flow speeds and boat speeds
FR787807A
(en )
1935-09-30
Device for carrying out suspension in baby carriages or the like
FR39957E
(en )
1932-03-21
Device for the forced natural aspiration of fumes and other fluids
FR626606A
(en )
1927-09-15
Improvements in devices for the concentration and evaporation of liquids