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公开(公告)号：US2068038A
公开(公告)日：1937-01-19
申请号：US68543633
申请日：1933-08-16
Applicant: PROTHERO FLOYD S , PARSONS JOHN B
Inventor： PROTHERO FLOYD S , PARSONS JOHN B
IPC: F01B3/04
CPC classification number: F01B3/045
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