Saved successfully
Save failed
Saved Successfully
Save Failed
公开(公告)号:BR6906553D0
公开(公告)日:1973-01-11
申请号:BR20655369
申请日:1969-02-21
Applicant: BAYER AG
Inventor: SIEVERT H , STEINBISS H , SALOMON M , WANDEL M
IPC: D06N7/00