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last 30 patents
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Patent Application
Electronic sound screening system and method of accoustically impov...
Publication number
20050254663
Publication date
Nov 17, 2005
Andreas Raptopoulos
G10 - MUSICAL INSTRUMENTS ACOUSTICS
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Patent Application
Apparatus for acoustically improving an environment
Publication number
20030026436
Publication date
Feb 6, 2003
Andreas Raptopoulos
G10 - MUSICAL INSTRUMENTS ACOUSTICS