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Silencer or noise damper
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Patent number 6,802,388
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Issue date Oct 12, 2004
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WOCO Franz-Josef Wolf & Co. GmbH
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Franz Josef Wolf
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F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
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Bearing for a power unit
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Patent number 6,364,295
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Issue date Apr 2, 2002
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Woco Franz-Josef Wolf & Co.
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Franz Josef Wolf
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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Sound absorber for sound waves
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Patent number 6,290,022
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Issue date Sep 18, 2001
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Woco Franz-Josef Wolf & Co.
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Franz Josef Wolf
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G10 - MUSICAL INSTRUMENTS ACOUSTICS
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Pulse damper
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Patent number 6,109,304
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Issue date Aug 29, 2000
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Woco Franz-Josef Wolf & Co.
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Franz Josef Wolf
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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Intake silencer for motor vehicle
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Patent number 5,979,598
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Issue date Nov 9, 1999
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WOCO Franz-Josef Wolf & Co.
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Franz Josef Wolf
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F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS