F01N2210/02 - CPC Classification Index

ClassID:

137961 ⎘

F01N2210/02 - CPC Classification

Classification description:

Combination of methods of silencing Resonance and interference

Recent Application in this class:

20210231036

MUFFLER SYSTEM

20200386132

Exhaust sound attenuation device

20190032530

Combined exhaust gas silencer

20180374473

Exhaust system sound generation assembly unit

20130255226

Exhaust apparatus for internal combustion engine

20130186062

Exhaust device for an internal combustion engine

20120168245

Exhaust pipe part and exhaust apparatus for internal combustion engine