-
公开(公告)号：US1414555A
公开(公告)日：1922-05-02
申请号：US32497819
申请日：1919-09-19
Applicant: DONLEY FLOYD S , JAMES WELSH
Inventor： DONLEY FLOYD S , JAMES WELSH
IPC: B21D28/24
CPC classification number: B21D28/246
Search Results
1
records
(took 0.009 seconds)
筛选
AND
AND
过滤
NOT
NOT
Scan to Join
