Kit containing sealing liquid for safety closures

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United States of America Patent

PATENT NO 9383322
APP PUB NO 20140076042A1
SERIAL NO

14089813

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Importance

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Abstract

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A sealing liquid for sealing mail pieces contains water and a penetration agent. The sealing liquid is applied by letter-closing devices and franking machines containing such a sealing liquid. Once sealed, the opening of the letter produces a pronounced pattern so that it is clear that the letter has been opened. Therefore any attempts to reseal the once opened enveloped are easily detected.

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First Claim

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Patent Owner(s)

Patent OwnerAddress
FRANCOTYP-POSTALIA GMBHATTENTION PATENT DEPARTMENT PRENZLAUER PROMENADE 28 BERLIN 13089

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Gerhardt, Thomas Berlin, DE 17 48
Muhl, Wolfgang Hohen Neuendorf, DE 44 134

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