Paul W. Witwicki

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Bethune, FR

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Patents Grantslast 30 patents

Information Patent Grant
Apparatus for supplying unclogging gas to fluidized bed apparatus
- Patent number 4,880,311
- Issue date Nov 14, 1989
- Charbonnages DeFrance
- Arnaud Delebarre
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL