TREA

Daniel G. Elko

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  • Fulshear, TX, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Tank cleaning device
    • Patent number 5,871,023
    • Issue date Feb 16, 1999
    • Butterworth Technology, Inc.
    • George L. Sherman
    • B08 - CLEANING
  • Information Patent Grant

    Tank cleaning device
    • Patent number 5,640,983
    • Issue date Jun 24, 1997
    • Butterworth Systems, Inc.
    • George L. Sherman
    • B08 - CLEANING