Donald Kenneth Smith

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London, EN

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Patents Grantslast 30 patents

Information Patent Grant
Methods of recovering wool grease from spent wool scouring liquor
- Patent number 4,007,117
- Issue date Feb 8, 1977
- New Zealand Inventions Development Authority
- Donald Kenneth Smith
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE