Patents Assigned to Silver Helm, Inc.
  • Radiation-free cellular telephone system
    Patent number: 6377824
    Abstract: A cell phone with radiation-free sound transmission system is the subject of this invention. By converting electric signals into sound waves that are transmitted through acoustical tubes, the exposure of user to hazardous electromagnetic radiation is significantly reduced, compared to ordinary cellular telephones.
    Type: Grant
    Filed: June 8, 2000
    Date of Patent: April 23, 2002
    Assignee: Silver Helm, Inc.
    Inventors: Ronen Ingbir, Amir Berlad, Yariv Cohen, Roy Beck