James A. Hewitt

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Chislehurst, GB

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Patents Grantslast 30 patents

Information Patent Grant
Floating dredger and treatment plant
- Patent number 4,231,172
- Issue date Nov 4, 1980
- F. W. Payne & Son (Bickley) Limited
- James A. Hewitt
- E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING