-
公开(公告)号：US2107919A
公开(公告)日：1938-02-08
申请号：US455235
申请日：1935-02-01
Applicant: ALUMINUM CO OF AMERICA
Inventor： ORISON TURNER CARRELL , POWELL WEIGEL MELVIN
IPC: C01F7/06
CPC classification number: C01F7/06 , C01F7/0666
Search Results
1
records
(took 0.015 seconds)
筛选
AND
AND
过滤
NOT
NOT
Scan to Join
