EP 0261780 A3 19890719 - HIDDEN IMAGE SYSTEM
Title (en)
HIDDEN IMAGE SYSTEM
Publication
Application
Priority
US 89942486 A 19860822
Abstract (en)
[origin: EP0261780A2] A sheet is provided which upon abrasion of one surface will reveal a preprinted message without removal of an opaque cover layer.
IPC 1-7
IPC 8 full level
B41M 5/124 (2006.01); A63F 3/06 (2006.01)
CPC (source: EP)
A63F 3/0685 (2013.01)
Citation (search report)
- [Y] GB 1520919 A 19780809 - LINDSELIUS B A
- [YD] US 3540914 A 19701117 - LIN CHAO-HAN
- [YD] US 4111462 A 19780905 - LANGE HEINZ E, et al
- [AD] US 3682673 A 19720808 - MANSKE WENDELL J
- [A] DE 2406911 A1 19750904 - PELIKAN WERKE WAGNER GUENTHER
Designated contracting state (EPC)
DE FR GB IT
DOCDB simple family (publication)
EP 0261780 A2 19880330; EP 0261780 A3 19890719; JP S6353091 A 19880307
DOCDB simple family (application)
EP 87306941 A 19870805; JP 20736787 A 19870820