Language : English
Su Tommy

Patents

一种带有内部水冷的直拉单晶炉热屏

Hits:

Type of Patent:实用新型

State of Patent:已失效

Authorization number:201120229547.0

Service Invention or Not:no

Application Date:2011-07-01

Authorization Date:2012-05-23

Application Date:2011-07-01

Authorization Date:2012-05-23