F01N2210/00 - CPC Classification Index

ClassID:

137960 ⎘

F01N2210/00 - CPC Classification

Classification description:

Combination of methods of silencing

Sub-classes:

F01N2210/02 » Resonance and interference 7
F01N2210/04 » Throttling-expansion and resonance 23
F01N2210/06 » Throttling-expansion and interference 3

Recent Application in this class:

20050224284

Engine exhaust muffler with exhaust emission control function