DIFF Subgroup
A45D 2/38 Surface-wave devices
Introduced: September 1968
Full Title
Full titles differ between systems:
IPC:
Hair-curling or hair-waving appliances > Surface-wave devices
CPC:
Hair-curling or hair-waving appliances (heated curling-tongs, curling-irons A45D1/00 ) > Surface-wave devices
IPC and CPC are identically structured here. All 1 subcodes exist in both systems.
Child Classifications
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