John A. Neumann

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Currumbin, AU

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Patents Grantslast 30 patents

Information Patent Grant
Dredges
- Patent number 4,399,623
- Issue date Aug 23, 1983
- Neumann Equipment Marketing Co. Pty. Ltd.
- John A. Neumann
- E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Information Patent Grant
Sealing and lubricating system for a dredge
- Patent number 4,395,833
- Issue date Aug 2, 1983
- Neumann Equipment Marketing Co. Pty. Ltd.
- John A. Neumann
- E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING