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公开(公告)号：US3029343A
公开(公告)日：1962-04-10
申请号：US82907059
申请日：1959-07-23
Applicant: ARMOUR RES FOUND
Inventor： LEONARD REIFFEL , STONE CLINTON A
IPC: G01T3/00
CPC classification number: G01T3/00
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