发明名称 |
Apparatus identification system |
摘要 |
A system for coding and identifying an article is provided wherein a plurality of pellets are secured to the article. The pellets are each constructed from a known material and the thickness of the pellets vary. Each pellet may be identified by the measurement of the time that it takes for a known traveling wave, e.g. an ultrasonic wave, to pass through it.
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申请公布号 |
US4354387(A) |
申请公布日期 |
1982.10.19 |
申请号 |
US19810298152 |
申请日期 |
1981.08.31 |
申请人 |
NATIONAL IDENTIFICATION BUREAU INC. |
发明人 |
JONES, WILLIAM R.;HARRINGTON, EDGAR F. |
分类号 |
G01S15/88;G06K19/06;(IPC1-7):G01N29/00 |
主分类号 |
G01S15/88 |
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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