E01F8/0052 - CPC Classification Index

ClassID:

127940 ⎘

E01F8/0052 - CPC Classification

Classification description:

Arrangements for absorbing or reflecting air-transmitted noise from road or railway traffic used in a wall type arrangement with open cavities, e.g. for covering sunken roads Grate-style, e.g. as wall facing

Sub-classes:

E01F8/0058 » {with damping material, e.g. rockwool, sand} 3

Recent Application in this class:

20220081855

2022-03-17

INTERFERENCE NOISE-CONTROL UNIT

20200131724

2020-04-30

Sound absorbing board