-
公开(公告)号：US2922222A
公开(公告)日：1960-01-26
申请号：US64139557
申请日：1957-02-20
Applicant: PERFECT CIRCLE CORP
Inventor： FREDRICK JONES CERNYW
IPC: B23P19/08
CPC classification number: B23P19/088 , Y10T29/53074 , Y10T29/53478 , Y10T29/536 , Y10T29/53609
Search Results
1
records
(took 0.01 seconds)
筛选
AND
AND
过滤
NOT
NOT
Scan to Join
