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公开(公告)号：US2918018A
公开(公告)日：1959-12-22
申请号：US61889656
申请日：1956-10-29
Applicant: MILLER ALLYN C
Inventor： MILLER ALLYN C
CPC classification number: F04B43/08 , F01B19/04 , F04B1/0465 , F04B43/0045 , F04B43/086
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