John F. H. Ashworth

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East Drayton, Retford, Nottinghamshire DN22 OLF, GB

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Patents Grantslast 30 patents

Information Patent Grant
Trawl doors
- Patent number 4,640,037
- Issue date Feb 3, 1987
- John F. H. Ashworth
- A01 - AGRICULTURE FORESTRY ANIMAL HUSBANDRY HUNTING TRAPPING FISHING