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发明名称
Periodic reference signal modulation method and apparatus for representing the position of a device
摘要
申请公布号
US2976521(A)
申请公布日期
1961.03.21
申请号
US19550488795
申请日期
1955.02.17
申请人
GILFILLAN BROS. INC.
发明人
JR. THOMAS J. JOHNSON,
分类号
G01S7/40
主分类号
G01S7/40
代理机构
代理人
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