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Patents Grants
last 30 patents
Information
Patent Grant
Device for the purification of waste water
Patent number
4,062,911
Issue date
Dec 13, 1977
Landustrie Sneek Machinefabriek Elektrotechniek B.V.
Roelf Pepping
C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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Patent Grant
Devices for aerating liquids
Patent number
3,980,740
Issue date
Sep 14, 1976
Landustrie Sneek, Machinefabriek Elektrotechniek B.V.
Sietjo B. Bos
C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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