YIDAN CHANG

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Patents Grantslast 30 patents

Information Patent Grant
Hand operated auxiliary drive and retard torque control
- Patent number 10,576,981
- Issue date Mar 3, 2020
- Hitachi Construction Machinery Co., Ltd.
- Yidan Chang
- B60 - VEHICLES IN GENERAL

Patents Applicationslast 30 patents

Information Patent Application
HAND OPERATED AUXILIARY DRIVE AND RETARD TORQUE CONTROL
- Publication number 20170282918
- Publication date Oct 5, 2017
- YIDAN CHANG
- B60 - VEHICLES IN GENERAL