Networks for phase shifting

Introduced: September 1968

Full Title

Multiple-port networks comprising only passive electrical elements as network components > Networks for phase shifting

Of 4 combined children, 3 exist in both systems.

1 codes are CPC-only extensions.

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H03H 7/185 CPC only CPC only
H03H 7/19 Two-port phase shifters providing a predetermined phase shift, e.g. "all-pass" filters since 1980 IPC+CPC Available in IPC and CPC
H03H 7/20 Two-port phase shifters providing an adjustable phase shift IPC+CPC Available in IPC and CPC
H03H 7/21 providing two or more phase shifted output signals, e.g. n-phase output since 1980 IPC+CPC Available in IPC and CPC

Class H03,2013–2023, worldwide · Source: EPO PATSTAT

Class H03,2013–2023, worldwide · Source: EPO PATSTAT