| 发明名称 |
Envelope verifying not to contain any bacteriological or chemical powder comprises perimeter made of transparent paper |
| 摘要 |
The envelope perimeter is made of transparent paper (2) so that any powder it may contain is visible before opening.
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| 申请公布号 |
FR2831141(A3) |
申请公布日期 |
2003.04.25 |
| 申请号 |
FR20010013625 |
申请日期 |
2001.10.23 |
| 申请人 |
VITAL JEAN PIERRE |
发明人 |
VITAL JEAN PIERRE |
| 分类号 |
B65D27/04;(IPC1-7):B65D27/04 |
主分类号 |
B65D27/04 |
| 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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