Philip L. Hartman

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Belmont, CA, US

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Patents Grantslast 30 patents

Information Patent Grant
Pressure grouted pier and pier inserting tool
- Patent number 4,997,314
- Issue date Mar 5, 1991
- Philip L. Hartman
- E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Information Patent Grant
Pressure grouted pier and pier inserting tool
- Patent number 4,907,916
- Issue date Mar 13, 1990
- Philip L. Hartman
- E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING