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NTIS 바로가기국가/구분 | United States(US) Patent 등록 |
---|---|
국제특허분류(IPC7판) |
|
출원번호 | US-0719224 (1985-04-02) |
발명자 / 주소 |
|
출원인 / 주소 |
|
인용정보 | 피인용 횟수 : 20 인용 특허 : 0 |
A tamper detection envelope is disclosed wherein the closure flap of the envelope is applied with a pattern of spaced slits to produce a weakened structure that will break during tampering and be obvious under visual observation. The spaced slits are separated by normally unbroken connectors and are
In a tamper detectable envelope, the combination of a body portion formed from a front panel and rear panel with side flaps foldably connected to one of said panels and adhered to the other of said panels, a closure flap foldably connected along a score line to the top edge of one of said panels and
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