TREA

Wen Chang Tseng

Follow

Organization

  • TW
Organizations

Patents Grantslast 30 patents

  • Information Patent Grant

    Safety braking device for doors
    • Patent number 9,371,672
    • Issue date Jun 21, 2016
    • Wen Chang Tseng
    • Wen Chang Tseng
    • E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES

Patents Applicationslast 30 patents

Trademarklast 30 trademarks