Efrain A. Mandracchia

Person

  • Half Moon Bay, CA, US

Patents Grantslast 30 patents

  • Information Patent Grant

    Electromagnetic acoustic transducer

    • Patent number 5,503,020
    • Issue date Apr 2, 1996
    • Sonic Force Corporation
    • Efrain A. Mandracchia
    • B06 - GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL