Jinzhang Yu

Follow

Person

Zhejiang Province, CN

People

Patents Applicationslast 30 patents

Information Patent Application
Automatic Trip Device for a Window Screen
- Publication number 20080128096
- Publication date Jun 5, 2008
- Xiangyi Dong
- E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
Information Patent Application
Automatically Sliding Windows Without Sash
- Publication number 20080066384
- Publication date Mar 20, 2008
- Jinzhang Yu
- E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES