Type of Patent:发明
State of Patent:已失效
Authorization number:201210153879.4
Service Invention or Not:no
Application Date:2012-05-18
Authorization Date:2014-04-09
Pre One:一种炼钢炉用干式喷补料
Next One:一种利用硼泥制备钢包或中间包覆盖剂的方法
The Last Update Time:..