including a flat surface on either the extrados or intrados

Industry

  • CPC
  • B64C2003/144
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Patents Grantslast 30 patents

  • Information Patent Grant

    3697193

    • Patent number 3,697,193
    • Issue date Oct 10, 1972
    • B64 - AIRCRAFT AVIATION COSMONAUTICS

Patents Applicationslast 30 patents