Schreiber; Erhard

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Hanover, DE

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Patents Grantslast 30 patents

Information Patent Grant
Apparatus for the injection of compressed air into a liquid
- Patent number 5,304,301
- Issue date Apr 19, 1994
- Schreiber; Berthold
- Hans Schmidt
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information Patent Grant
Activation plant with funnel-shaped secondary sedimentation
- Patent number 5,271,832
- Issue date Dec 21, 1993
- Schreiber; Erhard
- Berthold Schreiber
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information Patent Grant
Aeration apparatus for liquid
- Patent number 5,234,632
- Issue date Aug 10, 1993
- Schreiber; Berthold
- Hans Schmidt
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information Patent Grant
Machine for intercepting solid constituents in liquid streams
- Patent number 5,098,561
- Issue date Mar 24, 1992
- Schreiber; Berthold
- Wolfgang Grabbe
- E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING

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