having two or more spaced reflecting surfaces (H01Q19/20 takes precedence)

Introduced: September 1968

Title

Titles differ between systems:

IPC: having two or more spaced reflecting surfaces

CPC: having two or more spaced reflecting surfaces (H01Q19/20 takes precedence)

Full Title

Full titles differ between systems:

IPC:

Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic > using reflecting surfaces > having two or more spaced reflecting surfaces

CPC:

IPC and CPC are identically structured here. All 2 subcodes exist in both systems.

IPC defines codes here since 1980.

Child Classifications

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H01Q 19/185 wherein the surfaces are plane since 1980 IPC+CPC Available in IPC and CPC
H01Q 19/19 comprising one main concave reflecting surface associated with an auxiliary reflecting surface since 1980 +3 CPC IPC+CPC Available in IPC and CPC