| 发明名称 |
TIME DURATION INDICATOR SYSTEMS, AND ALSO PRODUCTS CONTAINING SUCH INDICATOR SYSTEMS HAVING A LIMITED DURATION OF USE OR LIFE |
| 摘要 |
Time duration indicator systems comprising a porous inert carrier ant 8 volatile liquid, capable of reversibly changing the visual properties of the carrier. Such indicator systems can be used for products having a limited duration of use or life. **** |
| 申请公布号 |
CA1282285(C) |
申请公布日期 |
1991.04.02 |
| 申请号 |
CA19860525112 |
申请日期 |
1986.12.11 |
| 申请人 |
NAARDEN INTERNATIONAL N.V. |
发明人 |
TRAAS, PETRUS C. |
| 分类号 |
G09F3/02;C09K3/00;G01K3/04;G04F1/02;G07C1/02 |
主分类号 |
G09F3/02 |
| 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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