Robert J. Campbell

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Salem, NH, US

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Patents Grantslast 30 patents

Information Patent Grant
Plural stage freeze crystallization with wash-water/concentrate int...
- Patent number 3,992,900
- Issue date Nov 23, 1976
- Avco Corporation
- Robert J. Campbell
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE