Ets. Rivard S.A.

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Daumeray, FR

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Patents Grantslast 30 patents

Information Patent Grant
Mechanized unit for digging a trench and laying elongate objects
- Patent number 4,812,078
- Issue date Mar 14, 1989
- Ets. Rivard S.A.
- Daniel Rivard
- E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Information Patent Grant
Device for digging trenches
- Patent number 4,794,709
- Issue date Jan 3, 1989
- Ets. Rivard S.A.
- Daniel Rivard
- E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Information Patent Grant
Trenching wheel, more especially for digging trenches
- Patent number 4,768,297
- Issue date Sep 6, 1988
- Ets. Rivard S.A.
- Daniel Rivard
- E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING