Patents Assigned to Extension Technology Corp.
  • Local area network transmission emulator
    Patent number: 5323388
    Abstract: A method and apparatus for using switched telecommunications services to emulate a local area network (LAN) medium. The method and apparatus convert a public switched network or an equivalent private network into a LAN cabling method for connecting distant devices using the same communications software as used in traditionally wired LANs.
    Type: Grant
    Filed: July 27, 1993
    Date of Patent: June 21, 1994
    Assignee: Extension Technology Corp.
    Inventors: Eugene Y. Chang, David B. Richardson, Bennett C. Baker
  • Local area network transmission emulator
    Patent number: 5280481
    Abstract: A method and apparatus for using switched telecommunications services to emulate a local area network (LAN) medium. The method and apparatus convert a public switched network or an equivalent private network into a LAN cabling method for connecting distant devices using the same communications software as used in traditionally wired LANs.
    Type: Grant
    Filed: September 20, 1991
    Date of Patent: January 18, 1994
    Assignee: Extension Technology Corp.
    Inventors: Eugene Y. Chang, David B. Richardson, Bennett C. Baker