Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
February 2, 2010
Patent Application Number
11381928
Date Filed
May 5, 2006
Patent Citations Received
Patent Primary Examiner
Patent abstract
A speaker apparatus includes a generally cylindrically shaped, hollowed case, a drum membrane at a first end of the case; and an electrically powered speaker at a second end of the case. The speaker is preferably positioned to emit sound primarily away from the drum membrane. The drum membrane is preferably tunable, using a plurality of circumferentially positioned drum tuners.
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