Helmut H. Zapfe

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Mississauga, CA

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Patents Grantslast 30 patents

Information Patent Grant
Vapor permeation curable coatings for surface-porous substrates
- Patent number 4,368,222
- Issue date Jan 11, 1983
- Ashland Oil, Inc.
- James R. Blegen
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...