-
公开(公告)号：US1897462A
公开(公告)日：1933-02-14
申请号：US53900031
申请日：1931-05-21
Applicant: JOHN LEES
Inventor： ARTHUR CARTER
IPC: B21D24/02
CPC classification number: B21D24/02
Search Results
1
records
(took 0.011 seconds)
筛选
AND
AND
过滤
NOT
NOT
Scan to Join
