Jean-Paul Jour

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Saint-Etienne, FR

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Patents Grantslast 30 patents

Information Patent Grant
Cement mixing apparatus
- Patent number 4,890,927
- Issue date Jan 2, 1990
- Andre Salvaire
- E21 - EARTH DRILLING MINING
Information Patent Grant
Cement mixing process
- Patent number 4,838,699
- Issue date Jun 13, 1989
- Etudes et Fabrication
- Jean-Paul Jour
- E21 - EARTH DRILLING MINING