TREA

Ralph W. Hoekstra

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  • Stillman Valley, IL, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Control for snowplow blade
    • Patent number 4,353,177
    • Issue date Oct 12, 1982
    • Swenson Spreader Company
    • Ralph W. Hoekstra
    • E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
  • Information Patent Grant

    Apparatus for mounting a snowplow blade to a vehicle
    • Patent number 4,342,163
    • Issue date Aug 3, 1982
    • Swenson Spreader Company
    • Ralph W. Hoekstra
    • E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES