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David W. Schilling

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  • Woodbury, MN, US
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Patents Grantslast 30 patents

  • Information Patent Grant

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    • Patent number 5,974,757
    • Issue date Nov 2, 1999
    • 3M Innovative Properties Company
    • Leland R. Whitney
    • E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
  • Information Patent Grant

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    • Patent number 5,813,180
    • Issue date Sep 29, 1998
    • Minnesota Mining and Manufacturing Company
    • Leland R. Whitney
    • E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS