-
公开(公告)号：US2548971A
公开(公告)日：1951-04-17
申请号：US70942446
申请日：1946-11-13
Applicant: CELANESE CORP
IPC: B41N1/24 , D04H1/4258 , D04H1/54
CPC classification number: D04H1/4258 , B41N1/243 , D04H1/54
Search Results
1
records
(took 0.01 seconds)
筛选
AND
AND
过滤
NOT
NOT
Scan to Join
