Yonggan Ha

Person

  • Surrey, CA

Patents Grantslast 30 patents

  • Information Patent Grant

    Jaw crusher

    • Patent number 7,143,970
    • Issue date Dec 5, 2006
    • Yonggan Ha
    • B02 - CRUSHING, PULVERISING, OR DISINTEGRATING PREPARATORY TREATMENT OF GRAIN...
  • Information Patent Grant

    Rock crushing apparatus and method

    • Patent number 5,482,218
    • Issue date Jan 9, 1996
    • Yonggan Ha
    • B02 - CRUSHING, PULVERISING, OR DISINTEGRATING PREPARATORY TREATMENT OF GRAIN...

Patents Applicationslast 30 patents

  • Information Patent Application

    Jaw crusher

    • Publication number 20040129814
    • Publication date Jul 8, 2004
    • Yonggan Ha
    • B02 - CRUSHING, PULVERISING, OR DISINTEGRATING PREPARATORY TREATMENT OF GRAIN...