DIFF Subgroup
H10B 20/20 Programmable ROM [PROM] devices comprising field-effect components (H10B20/10 takes precedence)
Introduced: January 2023
Title
Titles differ between systems:
IPC: Programmable ROM [PROM] devices comprising field-effect components
CPC: Programmable ROM [PROM] devices comprising field-effect components (H10B20/10 takes precedence)
Full Title
Full titles differ between systems:
IPC:
Read-only memory [ROM] devices > Programmable ROM [PROM] devices comprising field-effect components
CPC:
Read-only memory [ROM] devices > Programmable ROM [PROM] devices comprising field-effect components (H10B20/10 takes precedence)
IPC and CPC are identically structured here. All 1 subcodes exist in both systems.
IPC defines codes here since 2023.
Child Classifications
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- H10B 20/25 One-time programmable ROM [OTPROM] devices, e.g. using electrically-fusible links since 2023 IPC+CPC Available in IPC and CPC