AT220161B
(en )
1962-03-12
Filter apparatus for cleaning swimming pool water
AT252267B
(en )
1967-02-10
Device for cleaning liquids
CH370996A
(en )
1963-07-31
Method of cleaning solid material
AT293139B
(en )
1971-09-27
Process for descaling metals
CH389520A
(en )
1965-03-15
Device for draining waste water from basins
CH384795A
(en )
1965-02-26
Device for cleaning objects
AT213348B
(en )
1961-02-10
Method and system for emptying water closets
AT197754B
(en )
1958-05-27
System for removing bottom sludge from swimming pools
CH374522A
(en )
1964-01-15
Device for cleaning solid material
CH390881A
(en )
1965-04-30
Method of dewatering sludge
AT263687B
(en )
1968-07-25
Process for bleaching wool
CH348151A
(en )
1960-08-15
Filter system for cleaning water
AT254084B
(en )
1967-05-10
Process for clarifying waste water
CH383115A
(en )
1964-10-15
Process for etching magnesium
AT197290B
(en )
1958-04-25
Device for cleaning liquids
CH364482A
(en )
1962-11-15
Process for the permanent stiffening of textiles
CH400016A
(en )
1965-09-30
Process for removing sludge from self-opening separators
CH383939A
(en )
1964-11-15
Process for the extraction of heavy water
CH346863A
(en )
1960-06-15
Device for shaking vessels
AT205940B
(en )
1959-10-26
Device for removing dirt floating on the mirror of swimming pools or the like
AT195751B
(en )
1958-02-25
Device for developing photosensitive papers od. Similar. Supports or to apply the contact reversal process
CH484329A
(en )
1970-01-15
Device for removing puddles of oil from water
AT193812B
(en )
1957-12-10
Device for aerating waste water
CH371777A
(en )
1963-04-30
Process for making textiles water repellent
FR1150824A
(en )
1958-01-20
Advanced water softener