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公开(公告)号:US2177686A
公开(公告)日:1939-10-31
申请号:US17544237
申请日:1937-11-19
Applicant: WARNER BROS
Inventor: FRANK BRACKEN , RUSSELL REED
IPC: F02B63/04
CPC classification number: F02B63/04 , F02B63/047
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公开(公告)号:US2177687A
公开(公告)日:1939-10-31
申请号:US22934638
申请日:1938-09-10
Applicant: WARNER BROS
Inventor: FRANK BRACKEN , RUSSELL REED
IPC: F02B63/04
CPC classification number: F02B63/04 , F02B63/047
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