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公开(公告)号：US2532447A
公开(公告)日：1950-12-05
申请号：US54683144
申请日：1944-07-27
Applicant: DIAMOND POWER SPECIALITY
Inventor： HANDOLL PERCY G , BETTLE PHILIP R
IPC: F28G15/04
CPC classification number: F28G15/04
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