CPC Class Codes
H01J 25/74
Tubes specially designed to...
H01J 25/78
Tubes with electron stream ...
H01P 1/00
Auxiliary devices coupling ...
H01P 1/02
Bends; Corners; Twists
H01P 1/16
for mode selection, e.g. mo...
H01P 1/182
Waveguide phase-shifters H0...
H01P 1/211
Waffle-iron filters; Corrug...
H01P 1/28
Short-circuiting plungers
H01P 3/00
Waveguides; Transmission li...
H01P 3/10
Wire waveguides, i.e. with ...
H01P 3/12
Hollow waveguides H01P3/20 ...
H01P 5/08
for linking dissimilar line...
H01Q 13/0208
Corrugated horns waveguide ...
H01Q 13/24
constituted by a dielectric...
H01Q 13/28
comprising elements constit...
H01Q 25/04
Multimode antennas corrugat...
H04B 3/52
Systems for transmission be...