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Berthold Schreiber
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Hanover, DE
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last 30 patents
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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
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Patent Grant
Apparatus for introducing a gas into a fluid
Patent number
4,818,446
Issue date
Apr 4, 1989
Schreiber Corporation, Inc.
Berthold Schreiber
B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL