of circular or elliptical cross section

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    • LUCCHINI RS S.P.A.
    • Steven Cervello
    • B60 - VEHICLES IN GENERAL
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    3127211

    • Patent number 3,127,211
    • Issue date Mar 31, 1964
    • B60 - VEHICLES IN GENERAL
  • Information Patent Grant

    2548839

    • Patent number 2,548,839
    • Issue date Apr 10, 1951
    • B60 - VEHICLES IN GENERAL
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    1473483

    • Patent number 1,473,483
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Patents Applicationslast 30 patents

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    • Siemens Aktiengesellschaft
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    • B60 - VEHICLES IN GENERAL