Johannes M. DeBeer

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Cape Province, ZA

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Patents Grantslast 30 patents

Information Patent Grant
Drilling mud additive
- Patent number 5,401,719
- Issue date Mar 28, 1995
- Chemical Services Limited
- Johannes M. DeBeer
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...