Exhaust gas purification apparatus for an internal combustion engine of motor vehicles
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United States of America Patent
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Oct 12, 1982
Issued Date -
N/A
app pub date -
Aug 19, 1980
filing date -
Jul 28, 1977
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An exhaust gas purification apparatus for an internal combustion engine including a catalyst chamber containing a catalyst composition for the catalytic conversion of harmful substances contained in the exhaust gases wherein the interior wall of the exhaust pipe connecting the engine with the catalyst chamber is provided with a catalytically active coating for at least a portion of its length.
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