George John Hannes

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Maumee, OH, US

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Patents Grantslast 30 patents

Information Patent Grant
Fibrous mat especially suitable for roofing products and a method o...
- Patent number 4,129,674
- Issue date Dec 12, 1978
- Johns-Manville Corporation
- George J. Hannes
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Grant
Fibrous mat especially suitable for roofing products
- Patent number 4,112,174
- Issue date Sep 5, 1978
- Johns-Manville Corporation
- George John Hannes
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE