Jiajia CHEN

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Patents Grantslast 30 patents

Information Patent Grant
Fitness equipment spring counterweights balancer
- Patent number 9,561,394
- Issue date Feb 7, 2017
- Jiajia Chen
- A63 - SPORTS GAMES AMUSEMENTS

Patents Applicationslast 30 patents

Information Patent Application
A FITNESS EQUIPMENT SPRING COUNTERWEIGHTS BANLANCER
- Publication number 20160332020
- Publication date Nov 17, 2016
- Jiajia CHEN
- A63 - SPORTS GAMES AMUSEMENTS