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Charles G. Sproule IV
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Malvern, PA, US
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last 30 patents
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Patent Grant
Communication and speech enhancement system
Patent number
9,943,712
Issue date
Apr 17, 2018
DOLORES SPEECH PRODUCTS LLC
John Hamilton
A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
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last 30 patents
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Patent Application
COMMUNICATION AND SPEECH ENHANCEMENT SYSTEM
Publication number
20160001110
Publication date
Jan 7, 2016
Delores Speech Products, LLC
John Hamilton
G10 - MUSICAL INSTRUMENTS ACOUSTICS