Electronic blackboard system

Details Electronic blackboard system Electronic blackboard system

1986-09-02

1989-01-10

Picard, Leo P.

Education and demonstration

Means for demonstrating apparatus, product, or surface...

Chalkboard or equivalent means having easily erasable surface

358256, 358285, H04N 1024

Patent

active

047971061

ABSTRACT:
An electronic blackboard system capable of using an existing white board or blackboard which may even be one that is already installed on a wall.

REFERENCES:
patent: 4587568 (1986-05-01), Takayama et al.
patent: 4609946 (1986-09-01), Thaler
patent: 4725889 (1988-02-01), Yaniv et al.

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