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Patent Classification Explorer PCE

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Search for IPC and CPC classification codes or keywords

H
H04
H04B
H04B 11/00

CPC Main Group

H04B 11/00

Transmission systems employing ultrasonic, sonic or infrasonic waves

CPC H04B 11/00

IPC Equivalent: H04B 11/00

4 CPC-only subgroups

H04B 10/00 H04B 13/00

Data: WIPO (IPC), EPO/USPTO (CPC) — CC BY 4.0

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