• US 5,595,829 A
  • Filed: 07/12/1995
  • Issued: 01/21/1997
  • Est. Priority Date: 07/12/1995
  • Status: Expired due to Term
First Claim
Patent Images

1. An improved posterboard, comprising:

  • a rectangular posterboard having vertical side edges and horizontal top and bottom edges;

    guide markings printed on the posterboard;

    the guide markings being visually perceptible at a writing distance away from the posterboard, and substantially imperceptible at a viewing distance away from the posterboard.

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