TREA

Research-Cottrell, Inc.

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Organization

  • Chicago, IL, US
Organizations

Patents Grantslast 30 patents

  • Information Patent Grant

    Framework structure
    • Patent number 4,381,636
    • Issue date May 3, 1983
    • Research-Cottrell, Inc.
    • Dennis H. Sapp
    • E04 - BUILDING
  • Information Patent Grant

    Jacking device
    • Patent number 4,238,115
    • Issue date Dec 9, 1980
    • Research-Cottrell, Inc.
    • Franz Kallinger
    • B66 - HOISTING LIFTING HAULING
  • Information Patent Grant

    Equilateral derrick structure
    • Patent number 4,122,646
    • Issue date Oct 31, 1978
    • Research-Cottrell, Inc.
    • Dennis H. Sapp
    • E04 - BUILDING

Patents Applicationslast 30 patents

Trademarklast 30 trademarks