FR893076A
(en )
1944-05-30
Process and installation for the biological purification of waste water
FR807838A
(en )
1937-01-22
Portable device for quickly filtering and making small amounts of water drinkable
FR858991A
(en )
1940-12-07
Installations for coagulation and deposit of materials contained in water
FR836220A
(en )
1939-01-12
Process for preventing the precipitation of hardeners contained in water
FR857443A
(en )
1940-09-12
Improvements to devices for heating and distilling water
FR841168A
(en )
1939-05-12
Method and device for using the mechanical energy contained in the movement of waves of standing water
FR846321A
(en )
1939-09-14
Installation for filtering and purifying water
FR784510A
(en )
1935-07-22
Device for the treatment and application of cement
FR852016A
(en )
1940-01-22
Improvements in the production of gas to water and in the apparatus used for this purpose
FR752446A
(en )
1933-09-22
Advanced means for removing moisture and water from turf or hard surfaces
FR857898A
(en )
1940-10-03
Device to facilitate swimming and movement in the water
FR843411A
(en )
1939-07-03
Apparatus for preventing deposits in beer pipes
FR848396A
(en )
1939-10-27
Apparatus for the incineration of garbage and other waste
FR860546A
(en )
1941-01-17
Improvements in the treatment or refining of a non-aqueous liquid
FR841616A
(en )
1939-05-24
Improvements to the circulation of water in siphons for sinks, washbasins, bidets and the like
FR806622A
(en )
1936-12-21
Process for the preparation of tablets which easily disintegrate in water
FR747332A
(en )
1933-06-14
Improved method and devices for assembling water pipes
FR832642A
(en )
1938-09-29
Method and devices for joining mechanical or other elements
FR830997A
(en )
1938-08-16
Device for the purification of excess water in pipes
FR804660A
(en )
1936-10-29
Improvements to devices used for the electrolysis of water
FR842171A
(en )
1939-06-07
Improvement in the establishment of hinges and hinges
FR779590A
(en )
1935-04-09
Combined sink faucet for water and liquid soap
FR944704A
(en )
1949-04-13
Disinfectant and deodorant device for cisterns
FR822924A
(en )
1938-01-11
Apparatus for the electrolysis of water
FR884036A
(en )
1943-07-30
Electrothermal process for the extraction of zinc contained in brasses