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公开(公告)号：US3052455A
公开(公告)日：1962-09-04
申请号：US78563559
申请日：1959-01-08
Applicant: SASKATCHEWAN POTASH
Inventor： MCLAUGHLIN ASA L , PRIESNITZ FREDERICK J , HAWORTH RUSSELL G , FLEMING WILLIAM M , STEVENS CONDER L , FROST BERT L
IPC: E21C27/10
CPC classification number: E21C27/10
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