Zheng Yong Jian

Follow

Person

Dongguan, CN

People

Patents Grantslast 30 patents

Information Patent Grant
Telephone accessory device and system for hands free operation
- Patent number 8,130,943
- Issue date Mar 6, 2012
- VTech Telecommunications Limited
- Zheng Yong Jian
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
System and method for sealing a telephone handset
- Patent number 7,862,673
- Issue date Jan 4, 2011
- VTech Telecommunications Limited
- Zhang Yong Mei
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...

Patents Applicationslast 30 patents

Information Patent Application
Telephone Accessory Device And System For Hands Free Operation
- Publication number 20090175439
- Publication date Jul 9, 2009
- VTech Telecommunications Limited
- Zheng Yong Jian
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
SYSTEM AND METHOD FOR SEALING A TELEPHONE HANDSET
- Publication number 20090066029
- Publication date Mar 12, 2009
- VTech Telecommunications Limited
- Zhang Yong Mei
- H04 - ELECTRIC COMMUNICATION TECHNIQUE