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发明名称
Improvements in or relating to gyroscopic direction indicators
摘要
申请公布号
GB504753(A)
申请公布日期
1939.05.01
申请号
GB19370029825
申请日期
1937.11.01
申请人
SIEMENS APPARATE UND MASCHINEN GESELLSCHAFT MIT BESCHRANKTER HAFTUNG
发明人
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主分类号
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