Henk Helweg

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Huizen, NL

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Patents Grantslast 30 patents

Information Patent Grant
Insect repellents
- Patent number 7,455,852
- Issue date Nov 25, 2008
- Quest International B.V.
- Richard Arthur Birch
- A01 - AGRICULTURE FORESTRY ANIMAL HUSBANDRY HUNTING TRAPPING FISHING

Patents Applicationslast 30 patents

Information Patent Application
Insect repellents
- Publication number 20040213822
- Publication date Oct 28, 2004
- Richard Arthur Birch
- A01 - AGRICULTURE FORESTRY ANIMAL HUSBANDRY HUNTING TRAPPING FISHING