Arvo E. Andersson

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Outokumpu, FI

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Patents Grantslast 30 patents

Information Patent Grant
Aerator for industrial and domestic wastewaters
- Patent number 4,925,598
- Issue date May 15, 1990
- Outokumpu Oy
- Tuomo V. J. Kivisto
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information Patent Grant
Immersible aerator and/or mixer apparatus
- Patent number 4,720,361
- Issue date Jan 19, 1988
- Outokumpu Oy
- Arvo E. Andersson
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
Immersible aerator and/or mixer apparatus
- Patent number 4,540,290
- Issue date Sep 10, 1985
- Outokumpu Oy
- Erkki J. Jarvinen
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL