Chang Feng-Sing

Person

  • Taipei, TW

Patents Grantslast 30 patents

  • Information Patent Grant

    Method of manufacturing blades for scissors

    • Patent number 6,021,693
    • Issue date Feb 8, 2000
    • Chang Feng-Sing
    • Chang Feng-Sing
    • B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL