Daniel Cotte

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Chambon Feugerolles, FR

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Patents Grantslast 30 patents

Information Patent Grant
Hydraulic slide control safety valve for a mine support jack
- Patent number 4,557,290
- Issue date Dec 10, 1985
- Bennes Marrel
- Roger Chanal
- E21 - EARTH DRILLING MINING
Information Patent Grant
Mining cylinder hydraulic slide valve
- Patent number 4,516,601
- Issue date May 14, 1985
- Bennes Marrel
- Roger Chanal
- E21 - EARTH DRILLING MINING