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Richard W. Sprang

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  • Lakeville, OH, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Vacuum toilet system
    • Patent number 5,345,618
    • Issue date Sep 13, 1994
    • Sealand Technology, Inc.
    • James Sigler
    • E03 - WATER SUPPLY SEWERAGE
  • Information Patent Grant

    Sanitary pump station
    • Patent number 4,854,827
    • Issue date Aug 8, 1989
    • Sealand Technology, Inc.
    • Edward F. McKiernan
    • E03 - WATER SUPPLY SEWERAGE
  • Information Patent Grant

    Vacuum toilet system
    • Patent number 4,819,279
    • Issue date Apr 11, 1989
    • Sealand Technology, Inc.
    • James Sigler
    • E03 - WATER SUPPLY SEWERAGE
  • Information Patent Grant

    Seal means for a flush valve assembly
    • Patent number 4,604,763
    • Issue date Aug 12, 1986
    • Clevepak Corporation
    • Richard W. Sprang
    • E03 - WATER SUPPLY SEWERAGE