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发明名称
Photosensitive obstacle and curb detection device for the blind
摘要
申请公布号
US3198952(A)
申请公布日期
1965.08.03
申请号
US19610138524
申请日期
1961.09.15
申请人
THE CORPORATION OF HAVERFORD COLLEGE
发明人
BENHAM THOMAS A.;JR. JOEL MALVERN BENJAMIN,
分类号
G01S17/02;G01S17/46;G09B21/00
主分类号
G01S17/02
代理机构
代理人
主权项
地址
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