TREA

Chung-Rei Mao

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  • Omaha, NE, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Thermal shade
    • Patent number 4,574,861
    • Issue date Mar 11, 1986
    • InterNorth, Inc.
    • Chung-Rei Mao
    • E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS