Frans Leerdam

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NT's-Gravenzande, NL

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Patents Grantslast 30 patents

Information Patent Grant
Method for preparing open-celled growing media and growing media
- Patent number 6,322,734
- Issue date Nov 27, 2001
- Preforma Westland B.V.
- Evert Van Zanten
- A01 - AGRICULTURE FORESTRY ANIMAL HUSBANDRY HUNTING TRAPPING FISHING