CH469769A
(en )
1969-03-15
Process for the preparation of polybenzoxazinediones
AT175782B
(en )
1953-08-10
Process for the production of semi-pulp
AT176803B
(en )
1953-11-25
Process for the treatment of industrial and service water
CH288176A
(en )
1953-01-15
Process for ozone treatment of water and equipment for carrying out this process.
CH287573A
(en )
1952-12-15
Process and system for purifying water.
CH295405A
(en )
1953-12-31
Process for the electrochemical treatment of metal objects.
AT176805B
(en )
1953-11-25
Process for the treatment of feed water in high pressure vessels
AT172927B
(en )
1952-10-25
Process for cavitation treatment of liquids
CH249877A
(en )
1947-07-31
Process and device for the purification of waste water.
AT174442B
(en )
1953-03-25
Process for the desulphurization of gases
CH285151A
(en )
1952-08-31
Process and system for wastewater treatment.
CH322056A
(en )
1957-05-31
Process for the reduction of 3-keto-steroids to 3a-oxy-steroids
AT179942B
(en )
1954-10-25
Means and processes for the pretreatment of metal surfaces
AT185357B
(en )
1956-04-25
Process for the catalytic hydrogenation of CO with water vapor
AT177856B
(en )
1954-03-10
Process for the production of anti-corrosion and sealing agents
AT179289B
(en )
1954-08-10
Process for the production of halofluoroethenes
AT176414B
(en )
1953-10-26
Process for the processing and regeneration of pickling liquors
AT174627B
(en )
1953-04-25
Process for the intermittent autogenous hardening of steel objects and equipment for carrying out the process
AT184594B
(en )
1956-02-10
Process for the reduction of ores
AT189474B
(en )
1957-04-10
Process for the prevention of corrosion
AT179547B
(en )
1954-09-10
Process for the reduction of iron oxides
AT185659B
(en )
1956-05-25
Method and device for the production of metal barrels
AT185505B
(en )
1956-05-11
Process for the production of ergosterol and accompanying substances
AT185986B
(en )
1956-06-25
Process for the production of copolymers
AT179094B
(en )
1954-07-10
Process for the production of copolymers