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发明名称
IMBIBITION INTERVAL TIMER AND ANNUNCIATOR
摘要
申请公布号
CA894924(A)
申请公布日期
1972.03.07
申请号
CAD894924
申请日期
申请人
POLAROID CORPORATION
发明人
EDWIN K. SHENK
分类号
G03B17/52;G03D13/00;(IPC1-7):G03D13/00
主分类号
G03B17/52
代理机构
代理人
主权项
地址
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