DIFF Subgroup
H01J 23/033 Collector cooling devices
Introduced: July 1974
Full Title
Full titles differ between systems:
IPC:
Details of transit-time tubes of the types covered by group > Electrodes; Magnetic control means; Screens > Collectors > Collector cooling devices
CPC:
Details of transit-time tubes of the types covered by group H01J25/00 > Electrodes; Magnetic control means; Screens (associated with resonator or delay system H01J23/16) > Collectors > Collector cooling devices
No child classifications to compare. This is a leaf node in both IPC and CPC.