TREA

Clifford BLACK

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  • Chicago, IL, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Self centering shaft wall system
    • Patent number 7,861,470
    • Issue date Jan 4, 2011
    • United States Gypsum Company
    • James Joseph Lehane
    • E04 - BUILDING
  • Information Patent Grant

    Self centering shaft wall system
    • Patent number 7,712,267
    • Issue date May 11, 2010
    • United States Gypsum Company
    • James Joseph Lehane
    • E04 - BUILDING

Patents Applicationslast 30 patents

  • Information Patent Application

    SELF CENTERING SHAFT WALL SYSTEM
    • Publication number 20100205873
    • Publication date Aug 19, 2010
    • United States Gypsum Company
    • James Joseph LEHANE
    • E04 - BUILDING
  • Information Patent Application

    SELF CENTERING SHAFT WALL SYSTEM
    • Publication number 20080120943
    • Publication date May 29, 2008
    • United States Gypsum Company
    • James Joseph LEHANE
    • E04 - BUILDING