TREA

Patrice Chefson

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  • Elbeuf, FR
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Patents Grantslast 30 patents

  • Information Patent Grant

    Filtering device
    • Patent number 4,969,494
    • Issue date Nov 13, 1990
    • Spiragaine, S.A.
    • Patrice Chefson
    • B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
  • Information Patent Grant

    Sleeves for unloading
    • Patent number 4,942,953
    • Issue date Jul 24, 1990
    • Spiragaine S.A.
    • Patrice Chefson
    • B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL