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Richard K. DRUMM
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Mt. Sinai, NY, US
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last 30 patents
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Patent Grant
Drumhead with extended collar
Patent number
8,859,869
Issue date
Oct 14, 2014
D'Addario & Company, Inc.
Steven T. Murray
G10 - MUSICAL INSTRUMENTS ACOUSTICS
Patents Applications
last 30 patents
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Patent Application
DRUMHEAD WITH EXTENDED COLLAR
Publication number
20140260893
Publication date
Sep 18, 2014
D'Addario & Company, Inc.
Steven T. MURRAY
G10 - MUSICAL INSTRUMENTS ACOUSTICS