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Handbell
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Patent number 4,466,329
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Issue date Aug 21, 1984
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Maas-Rowe Carillons, Inc.
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Gamon B. Hayward
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G10 - MUSICAL INSTRUMENTS ACOUSTICS
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Musical instrument
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Patent number 4,154,135
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Issue date May 15, 1979
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Isabelle L. Haack
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G10 - MUSICAL INSTRUMENTS ACOUSTICS
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2571178
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Patent number 2,571,178
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Issue date Oct 16, 1951
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G10 - MUSICAL INSTRUMENTS ACOUSTICS