EP 0543528 A1 19930526 - Security document.
Title (en)
Security document.
Title (de)
Sicherheitsdokument.
Title (fr)
Document de sécurité.
Publication
Application
Priority
US 79581891 A 19911121
Abstract (en)
A security document (10) is provided having a designated area of weakness (16) which is capable of subsequently receiving an image thereon of a predetermined amount to be paid. The area of weakness preferably comprises an area having a plurality of lines of weakening (18) formed therein. Any attempt to remove or alter the image will further weaken the area of weakness causing premature failure, thereby providing an indication of attempted alteration to the document. <IMAGE>
IPC 1-7
IPC 8 full level
B41M 3/14 (2006.01); B42D 15/00 (2006.01)
CPC (source: EP)
B41M 3/14 (2013.01); B42D 25/29 (2014.10)
Citation (search report)
- [X] US 2285806 A 19420609 - CLOSE WILMOT S
- [X] US 1343762 A 19200615 - CLIFFORD CHURCHILL
Designated contracting state (EPC)
CH FR LI
DOCDB simple family (publication)
EP 0543528 A1 19930526; CA 2081971 A1 19930522; MX 9206665 A 19930501
DOCDB simple family (application)
EP 92310060 A 19921103; CA 2081971 A 19921102; MX 9206665 A 19921119