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发明名称
Improvements relating to systems for transmitting indications
摘要
申请公布号
GB500647(A)
申请公布日期
1939.02.07
申请号
GB19370013125
申请日期
1937.05.07
申请人
THE SPERRY GYROSCOPE COMPANY LIMITED;WILLIAM GEORGE HARDING;ROBERT HAYES NISBET
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