Remote chalkboard automatic cursor

  • US 4,317,956 A
  • Filed: 11/10/1980
  • Issued: 03/02/1982
  • Est. Priority Date: 11/10/1980
  • Status: Expired due to Term
First Claim
Patent Images

1. A display system havinga sending unit anda viewing unit for displaying images created at said sending unit,characterized bymeans for displaying a selective distinctive graphic image at positions on said viewing unit corresponding to positions where said images are being changed on said sending unit.

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