Shanghai
China
3
2024-03-21
The entities that hold a legal rights for patent applications filed by inventor CHEN Yanfeng:
Yanfeng CHEN from Shanghai, CN has applied for patents for these inventions. The list has both pending applications and granted patents:
SPIRAL HEAT EXCHANGER AND HEAT EXCHANGE DEVICE
#2 | 2024-01-11SPIRAL HEAT EXCHANGER AND MANUFACTURING METHOD THEREFOR
#3 | 2015-10-08Switch power converter and frequency response characteristic testing and adjusting method thereof
1317532 ⎘