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Vincent B. Steffen

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  • New Hampton, IA, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Aspirating panel for grain bins
    • Patent number 4,319,411
    • Issue date Mar 16, 1982
    • Vincent B. Steffen
    • F26 - DRYING
  • Information Patent Grant

    Protective element for fork-lift pallets
    • Patent number 4,292,899
    • Issue date Oct 6, 1981
    • Vincent B. Steffen
    • B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
  • Information Patent Grant

    Pressure reducing exhaust method and structure for ventilated grain...
    • Patent number 4,256,029
    • Issue date Mar 17, 1981
    • Sylvester L. Steffen
    • B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
  • Information Patent Grant

    Grain drying apparatus
    • Patent number 4,037,527
    • Issue date Jul 26, 1977
    • Vincent B. Steffen
    • B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
  • Information Patent Grant

    Grain drying apparatus
    • Patent number 4,004,352
    • Issue date Jan 25, 1977
    • Vincent B. Steffen
    • F26 - DRYING
  • Information Patent Grant

    Grain bin door
    • Patent number 3,991,913
    • Issue date Nov 16, 1976
    • Vincent B. Steffen
    • B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL