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Robert Andrew Schoonraad
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North Hollywood, CA, US
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Patents Grants
last 30 patents
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Patent Grant
Reactive silent speaker device for simulating harmonic nonlineariti...
Patent number
11,348,568
Issue date
May 31, 2022
AMP Devices, LLC
Robert Andrew Schoonraad
G10 - MUSICAL INSTRUMENTS ACOUSTICS
Information
Patent Grant
Stringed instrument machine head adapter
Patent number
10,984,763
Issue date
Apr 20, 2021
AMP Devices, LLC
Robert Andrew Schoonraad
G10 - MUSICAL INSTRUMENTS ACOUSTICS
Patents Applications
last 30 patents
Information
Patent Application
Reactive Silent Speaker Device for Simulating Harmonic Nonlineariti...
Publication number
20220068254
Publication date
Mar 3, 2022
AMP Devices, LLC
Robert Andrew Schoonraad
H04 - ELECTRIC COMMUNICATION TECHNIQUE