Patent classifications
H
ELECTRICITY
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H01
ELECTRIC ELEMENTS
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H01P
WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
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3/00
Waveguides; Transmission lines of the waveguide type
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H01P3/18
built-up from several layers to increase operating surface, i.e. alternately conductive and dielectric layers
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