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Exhaust gas cleaner for internal combustion engine with particulate filter having heat-absorbing area |
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Honeycomb-shaped cordierite catalyst carrier and method for producing the same |
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2001-03-20 |
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Cordierite honeycomb structure and process for producing the same |
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2000-06-27 |
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Cordierite honeycomb structural body and method for its production |
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1999-12-07 |
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Cordierite honeycomb structure and process for producing the same |
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Method for cutting undried clay material |
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1997-09-23 |