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PCE
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Search for IPC and CPC classification codes or keywords
DIFF Subgroup
H01Q 21/20

the units being spaced along or adjacent to a curvilinear path

Introduced: September 1968

Title

Titles differ between systems:

IPC: the units being spaced along, or adjacent to, a curvilinear path

CPC: the units being spaced along or adjacent to a curvilinear path

Full Title

Full titles differ between systems:

IPC:

Antenna arrays or systems > Arrays of individually energised antenna units similarly polarised and spaced apart > the units being spaced along, or adjacent to, a curvilinear path

CPC:

Antenna arrays or systems (arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system H01Q3/00) > Arrays of individually energised antenna units similarly polarised and spaced apart > the units being spaced along or adjacent to a curvilinear path

Of 1 combined children, 0 exist in both systems.

1 codes are CPC-only extensions.

Child Classifications

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