Trygve Heggebo

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Porsgrunn, NO

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Patents Grantslast 30 patents

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Method of manufacturing NP- or NPK-containing fertilizers from magn...
- Patent number 4,323,386
- Issue date Apr 6, 1982
- Norsk Hydro a.s
- Trygve Heggebo
- C05 - FERTILISERS MANUFACTURE THEREOF