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Noise reducing apparatus
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Patent number 5,168,130
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Issue date Dec 1, 1992
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Bridgestone Corporation
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Hiroshi Shima
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G10 - MUSICAL INSTRUMENTS ACOUSTICS
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Noise reducing device for printer
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Patent number 5,121,811
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Issue date Jun 16, 1992
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Bridgestone Corporation
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Hiroshi Shima
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B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
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Noise reducing apparatus
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Patent number 4,858,720
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Issue date Aug 22, 1989
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Bridgestone Corporation
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Masanori Murase
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G10 - MUSICAL INSTRUMENTS ACOUSTICS
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Noise reducing apparatus
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Patent number 4,840,251
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Issue date Jun 20, 1989
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Bridgestone Corporation
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Masanori Murase
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G10 - MUSICAL INSTRUMENTS ACOUSTICS
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