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发明名称
Ventilator grating
摘要
申请公布号
GB884178(A)
申请公布日期
1961.12.06
申请号
GB19590021078
申请日期
1959.06.19
申请人
EDUARD LEX
发明人
分类号
B61C17/04;F01B7/02;F02B41/04;F02B75/02;F24F13/08;F42C15/295
主分类号
B61C17/04
代理机构
代理人
主权项
地址
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