USD236720S - Audio-visual projector for conveying information - Google Patents

Audio-visual projector for conveying information Download PDF

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Publication number
USD236720S
USD236720S US D236720 S USD236720 S US D236720S
Authority
US
United States
Prior art keywords
audio
conveying information
visual projector
projector
visual
Prior art date
Application number
Other languages
English (en)
Inventor
Mark P. Baker
Publication date

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