Christensen; Arvin Fay

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Ririe, ID, US

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Patents Grantslast 30 patents

Information Patent Grant
Water surface cleaner, method and apparatus
- Patent number 4,305,830
- Issue date Dec 15, 1981
- Christensen; Arvin Fay
- Masuo Shimura
- E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING