TREA

Charles Norman Sjogren

Follow

Person

  • San Gabriel, CA, US
People

Patents Grantslast 30 patents

  • Information Patent Grant

    Ice melting system and method
    • Patent number 4,117,794
    • Issue date Oct 3, 1978
    • Global Marine, Inc.
    • Charles Norman Sjogren
    • B63 - SHIPS OR OTHER WATERBORNE VESSELS RELATED EQUIPMENT
  • Information Patent Grant

    Ice melting system
    • Patent number 4,075,964
    • Issue date Feb 28, 1978
    • Global Marine, Inc.
    • Charles Norman Sjogren
    • B63 - SHIPS OR OTHER WATERBORNE VESSELS RELATED EQUIPMENT