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公开(公告)号：US2317982A
公开(公告)日：1943-05-04
申请号：US38920641
申请日：1941-04-18
Applicant: SPECIALTIES DEV CORP
Inventor： DIEHL WALTER S
CPC classification number: A62C3/07 , F02M1/00 , F02M2700/4326
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