CH467730A
(en )
1969-01-31
Device for gassing liquids
AT274693B
(en )
1969-09-25
Device for the biological purification of waste water
AT295425B
(en )
1972-01-10
Vertical axis aerator for aerating liquids
CH421846A
(en )
1966-09-30
Device for liquid atomization
AT277890B
(en )
1970-01-12
Device for aeration of waste water
AT247803B
(en )
1966-06-27
Device for aerating liquids
AT247128B
(en )
1966-05-25
System for gassing liquids
AT254089B
(en )
1967-05-10
Device for the treatment of water
AT268154B
(en )
1969-02-10
Device for aerating, preferably waste water
AT258642B
(en )
1967-12-11
Device for liquid distribution
DE1642517B2
(en )
1973-07-12
DEVICE FOR DESALINATING WATER
AT252144B
(en )
1967-02-10
Device for aerating liquids
CH417931A
(en )
1966-07-31
Device for cutting large foam bodies
FI45227C
(en )
1972-04-10
A method of making a cylinder of polyurethane foam from a liquid reaction mixture and an apparatus for carrying out the method.
CH508966A
(en )
1971-06-15
Device for the regulation of pressurized water nuclear reactors
AT261501B
(en )
1968-04-25
Method and device for biological purification of water
FI35574A
(en )
1965-12-10
Apparatus for aerating waste water or introducing a gaseous substance into a liquid
AT249543B
(en )
1966-09-26
Device for the detachable connection of apparatus housing walls
AT281703B
(en )
1970-05-25
Aeration device for the biological purification of waste water
FI45407C
(en )
1972-06-12
A method for evaporating a liquid from a solution passed to a vacuum-heated drum and an apparatus for carrying out the method
AT257494B
(en )
1967-10-10
Aeration gyro for aeration of water and sewage
CH464809A
(en )
1968-10-31
Device for circulating and aerating water
AT271506B
(en )
1969-06-10
Device for supporting pipe walls
FR1377213A
(en )
1964-10-31
Process for dephenolating residual water
FR1354333A
(en )
1964-03-06
Automatic liquid mixing process