-
公开(公告)号：US1901702A
公开(公告)日：1933-03-14
申请号：US53031831
申请日：1931-04-15
Applicant: ALUMINUM CO OF AMERICA
Inventor： COOK MARK F , BREISCH GEORGE T
IPC: B21B41/04
CPC classification number: B21B41/04
Search Results
1
records
(took 0.013 seconds)
筛选
AND
AND
过滤
NOT
NOT
Scan to Join
