-
公开(公告)号：US2271187A
公开(公告)日：1942-01-27
申请号：US29448839
申请日：1939-09-12
Applicant: ALUMINUM CO OF AMERICA
Inventor： FORTESCUE JOHN E , GREER HAROLD H
Search Results
1
records
(took 0.02 seconds)
筛选
AND
AND
过滤
NOT
NOT
Scan to Join
