Posterboard

Improved posterboard is formed from a rectangular posterboard having vertical side edges and horizontal top and bottom edges. Guide marking are applied to the posterbboard. The guide markings are visually perceptible at a writing distance away from the posterboard, and substantially imperceptible at...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	SARAO, MARY R, PITTS, BARBARA R
Format:	Patent
Sprache:	eng
Schlagworte:	ADVERTISING CRYPTOGRAPHY DISPLAY DISPLAYING EDUCATION GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS LABELS OR NAME-PLATES PHYSICS SEALS SIGNS TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION TECHNICAL SUBJECTS COVERED BY FORMER USPC TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Beschreibung
Zusammenfassung:	Improved posterboard is formed from a rectangular posterboard having vertical side edges and horizontal top and bottom edges. Guide marking are applied to the posterbboard. The guide markings are visually perceptible at a writing distance away from the posterboard, and substantially imperceptible at a viewing distance length away from the posterboard.