Record receiver having plural interactive leaves or a colorless – Having a colorless color-former – developer therefor – or... – Method of use – kit – or combined with marking instrument or...
Reexamination Certificate
2006-06-06
2006-06-06
Shewareged, B. (Department: 1774)
Record receiver having plural interactive leaves or a colorless
Having a colorless color-former, developer therefor, or...
Method of use, kit, or combined with marking instrument or...
C503S204000, C428S013000, C428S204000
Reexamination Certificate
active
07056860
ABSTRACT:
As a writing surface, the invention provides a waterproof solid sheet that has been formed from a polyvinyl chloride and that has at least one writing face that receives controllably semi-permanent ink writing. The writing is only controllably removable from the writing face by a remover-solvent; upon removal of the writing, the writing face is left writing-free and residue-free. The writing surface otherwise resists adverse conditions.
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patent: 4310978 (1982-01-01), Stern
patent: 4499126 (1985-02-01), Suzuki et al.
patent: 4946039 (1990-08-01), Garran
patent: 6022599 (2000-02-01), Rietveld et al.
patent: 6148556 (2000-11-01), Seki
patent: 6335799 (2002-01-01), Provost
patent: 6338211 (2002-01-01), Carney
patent: 6602334 (2003-08-01), Kaufmann
Shewareged B.
Simpson & Simpson PLLC
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