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PCE
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CPC Subgroup
H01P 1/211

Waffle-iron filters; Corrugated structures

Full Title

Auxiliary devices (coupling devices of the waveguide type H01P5/00) > Frequency-selective devices, e.g. filters > Hollow waveguide filters (H01P1/212, H01P1/213, H01P1/215, H01P1/219 take precedence) > Waffle-iron filters; Corrugated structures