William H. De Zavala

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Fillmore, CA, US

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Patents Grantslast 30 patents

Information Patent Grant
Prestressed concrete poles with internal bolting and leveling struc...
- Patent number 5,819,487
- Issue date Oct 13, 1998
- Ameron International Corporation
- Steven J. Bull
- E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING