the power supply being a battery or accumulator

Introduced: September 1968

Full Title

Lighting devices with a built-in power supply; Systems employing lighting devices with a built-in power supply > the power supply being a battery or accumulator

CPC subdivides this area 4x more granularly than IPC with 3 additional codes.

3 codes are CPC-only extensions.

IPC defines codes here since 2000.

Child Classifications

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F21S 9/022 +1 CPC CPC only CPC only
F21S 9/026 CPC only CPC only
F21S 9/028 CPC only CPC only
F21S 9/03 rechargeable by exposure to light since 2000 +3 CPC IPC+CPC Available in IPC and CPC