-
公开(公告)号：US3030088A
公开(公告)日：1962-04-17
申请号：US78204958
申请日：1958-12-22
Applicant: SASKATCHEWAN POTASH
Inventor： AARON DEVINE HAROLD , LLOYD MCLAUGHLIN ASA
IPC: E21C35/193
CPC classification number: E21C35/1936
Search Results
1
records
(took 0.01 seconds)
筛选
AND
AND
过滤
NOT
NOT
Scan to Join
