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公开(公告)号：US2847895A
公开(公告)日：1958-08-19
申请号：US17030450
申请日：1950-06-26
Applicant: HUNTINGTON FREDERICK T , SWIFT ALBERT M
Inventor： HUNTINGTON FREDERICK T , SWIFT ALBERT M
IPC: F42B33/02
CPC classification number: F42B33/02 , F42B33/002
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