TREA

Yvon Lefebvre

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  • Pierrefonds, CA
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Patents Grantslast 30 patents

  • Information Patent Grant

    22-Cyano-24-norcholanes
    • Patent number 4,011,212
    • Issue date Mar 8, 1977
    • American Home Products Corporation
    • Nedumparambil A. Abraham
    • C07 - ORGANIC CHEMISTRY
  • Information Patent Grant

    22-Cyano-24-norcholanes
    • Patent number 3,944,541
    • Issue date Mar 16, 1976
    • American Home Products Corporation
    • Nedumparambil A. Abraham
    • C07 - ORGANIC CHEMISTRY