DIFF Subgroup
H05H 7/18 Cavities; Resonators
Introduced: January 1985
Full Title
Full titles differ between systems:
IPC:
Details of devices of the types covered by groups > Vacuum chambers > Cavities; Resonators
CPC:
Details of devices of the types covered by groups H05H9/00, H05H11/00, H05H13/00 > Vacuum chambers (H05H5/03 takes precedence) > Cavities; Resonators
IPC and CPC are identically structured here. All 1 subcodes exist in both systems.
IPC defines codes here since 1985.
Child Classifications
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