Wallace D. Johnson

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Bartlesville, OK, US

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Patents Grantslast 30 patents

Information Patent Grant
Preparation of impact plastic compositions
- Patent number 3,935,136
- Issue date Jan 27, 1976
- Phillips Petroleum Company
- Clifford W. Childers
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...