Reusable preprinted form and method of participating in a...

Details Reusable preprinted form and method of participating in a... Reusable preprinted form and method of participating in a...

A - Human Necessities

23

F

233/2, 272/64, 1

A23F 3/06 (2006.01) A63F 3/06 (2006.01) B05D 5/00 (2006.01) B41M 5/00 (2006.01) B44C 1/00 (2006.01)

Patent

CA 1267814

Abstract of the Disclosure The cost of playing Bingo and other games requiring the use of the face of sheet material having a microporous surface layer and (2) applying to selected portions of the form a colorless, volatile marking liquid that temporarily imparts localized visually contrasting indicia. Evaporation of the marking liquid permits the form to be repeatedly re-used. A preferred sheet material is described in U.S. Patent No. 4,299,880.

551235

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