Hollandsche Aanneming Maatschappij B.V.

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Patents Grantslast 30 patents

Information Patent Grant
Rotary cutter head with jet flushing blades
- Patent number 4,327,507
- Issue date May 4, 1982
- Hollandsche Aanneming Maatschappij B.V.
- Johan H. Volbeda
- E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Information Patent Grant
Tooth positioning arrangement for an underwater soil cutting head
- Patent number 4,135,318
- Issue date Jan 23, 1979
- Hollandsche Aanneming Maatschappij B.V.
- Johan H. Volbeda
- E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING

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