DRAVO WELLMAN INC., A DELAWARE CORP

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  • Information Patent Grant

    Extensible and retractable chute

    • Patent number 4,946,018
    • Issue date Aug 7, 1990
    • Dravo Wellman, Inc.
    • Willard Binzen
    • B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL

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