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公开(公告)号：US3190224A
公开(公告)日：1965-06-22
申请号：US25799763
申请日：1963-02-12
Applicant: NAT RES DEV
Inventor： PETER BILLINGTON WILLIAM , FRANK HOWSON DAVID
IPC: F01B1/06
CPC classification number: F01B1/0682 , F01B1/0644
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