请参考
http://forum.e2002.com/read.php?tid=137997
A1:表示Application(first publication),指专利申请后第一次公开。A2:表示Second or subsequent republication of an application,指第二次公开之专利申请案。B1:表示Issued patent(no pre-grant publication),指核准前从未公开专利申请案,于核准后公告。B2:表示Issued patent(with pre-grant publication),指专利申请案已公开,于核准公告 |