Education and demonstration – Language – Writing or printing by hand
Patent
1985-06-17
1986-12-02
Grieb, William H.
Education and demonstration
Language
Writing or printing by hand
434115, G09B 1104, G09B 2100
Patent
active
046262199
ABSTRACT:
The invention is a sheet of writing paper that includes horizontal, parallel, equally spaced apart raised ridges for forming writing spaces therebetween, and a raised protrusion indicating the end of each writing space.
REFERENCES:
patent: 1253758 (1918-01-01), Wilkes
patent: 3514874 (1970-06-01), Strohl
patent: 3667139 (1972-06-01), Barr
patent: 3816943 (1974-06-01), Henry
patent: 3879611 (1975-04-01), Schroeder
Grieb William H.
Miller Richard L.
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