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Document Number
US Patent 4303915
Issued Date
December 1, 1981
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Inventors
D'Angelo; George (Rancho Cordova, CA)
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Abstract
A portable hand held, electronic alphanumeric display device for assisting individuals to communicate with one another comprising a keyboard with function switches; a display section and assorted logic and power circuitry to sequentially display a worded message.
Drawing
Silent communicator - US Patent 4303915 Drawing
Drawing from US Patent 4303915
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Description:
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Number of Claims:
9
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Owner
Published
December 1, 1981
Application Number
06/056,706
Filed
July 11, 1979
US Classification
345/169  
Int'l Classification
G09B   21/00   (20060101)   G09G   3/04   (20060101)   G09G   3/14   (20060101)  
Attorney/Law Firm
Parent Case
This is a continuation, of application Ser. No. 825,920, filed Aug. 19, 1977, now abandoned.
USPTO Field of Search
340/711   340/756   340/762   340/792  
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