Hans Bertschinger

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Dubendorf, CH

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Patents Grantslast 30 patents

Information Patent Grant
Sewage ventilating basin
- Patent number 4,392,954
- Issue date Jul 12, 1983
- Locher & Cie. AG
- Hans Bertschinger
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE