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3580996
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Patent Grant
3580996
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Source
Patent Number
3,580,996
Date Filed
Not available
Date Issued
Tuesday, May 25, 1971
53 years ago
CPC
G09B9/305 - by viewing with a camera a small-scale model of the terrain
US Classifications
348 - Television
178 - Telegraphy
342 - Communications: directive radio wave systems and devices
434 - Education and demonstration
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