| 发明名称 |
METHOD AND APPARATUS FOR DETECTING AT A DISTANCE THE STATUS AND IDENTITY OF OBJECTS |
| 摘要 |
A non-contact method of and system for distinguishing the presence, identity or status of an object.
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| 申请公布号 |
US3665449(A) |
申请公布日期 |
1972.05.23 |
| 申请号 |
USD3665449 |
申请日期 |
1969.07.11 |
| 申请人 |
MINNESOTA MINING AND MFG. CO. |
发明人 |
JAMES T. ELDER;DONALD A. WRIGHT |
| 分类号 |
G01N27/72;G08B13/24;(IPC1-7):G01R33/02 |
主分类号 |
G01N27/72 |
| 代理机构 |
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代理人 |
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| 主权项 |
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| 地址 |
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