John Guinn Hefner

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Schnecksville, PA, US

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Patents Grantslast 30 patents

Information Patent Grant
Hot melt adhesives produced from linear alternating polyketones
- Patent number 6,239,250
- Issue date May 29, 2001
- Air Products and Chemicals, Inc.
- John Guinn Hefner
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...