-
公开(公告)号：US3044753A
公开(公告)日：1962-07-17
申请号：US6240560
申请日：1960-10-13
Applicant: WILCOX MFG COMPANY
Inventor： WILCOX JR ARNOLD G
IPC: E21C27/12
CPC classification number: E21C27/124
Search Results
1
records
(took 0.008 seconds)
筛选
AND
AND
过滤
NOT
NOT
Scan to Join
