CPC Subgroup
H01J 25/74 Tubes specially designed to act as transit-time diode oscillators, e.g. monotrons
Full Title
Transit-time tubes, e.g. klystrons, travelling-wave tubes, magnetrons (details of transit-time tubes H01J23/00; particle accelerators H05H) > Tubes specially designed to act as transit-time diode oscillators, e.g. monotrons