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公开(公告)号：US1418209A
公开(公告)日：1922-05-30
申请号：US23901418
申请日：1918-06-08
Applicant: THOMAS T GAUNT , WILLIAM D N PERINE
Inventor： SMITH JOHN E
IPC: F01L1/28
CPC classification number: F01L13/0042 , F01L1/28
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