Yunjie Li

Follow

Person

Highland Park, NJ, US

People

Patents Grantslast 30 patents

Information Patent Grant
Automatic vacuum sewerage solids cleaning systems and methods
- Patent number 9,566,622
- Issue date Feb 14, 2017
- Qizhong Guo
- B08 - CLEANING

Patents Applicationslast 30 patents

Information Patent Application
AUTOMATIC VACUUM SEWERAGE SOLIDS CLEANING SYSTEMS AND METHODS
- Publication number 20140261735
- Publication date Sep 18, 2014
- Qizhong Guo
- B08 - CLEANING