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发明名称
Parking-time meter
摘要
申请公布号
US2249350(A)
申请公布日期
1941.07.15
申请号
US19390267844
申请日期
1939.04.14
申请人
DELAWARE CHEMICAL ENGINEERING COMPANY
发明人
PONT FRANCIS I. DU
分类号
G07F17/24
主分类号
G07F17/24
代理机构
代理人
主权项
地址
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