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公开(公告)号：US1766231A
公开(公告)日：1930-06-24
申请号：US4645125
申请日：1925-07-27
Applicant: DIAMOND POWER SPECIALITY
Inventor： SNOW NORMAN L , HONYWILL JR ALBERT W
IPC: F28G3/16
CPC classification number: F28G3/166
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