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Ralph Delle Donne

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  • Newark, DE, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Composite gage and drain hole sealer
    • Patent number 5,731,069
    • Issue date Mar 24, 1998
    • E. I. Du Pont de Nemours and Company
    • Ralph Delle Donne
    • C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...