Apparatus for measuring unknown time intervals by electric means

Introduced: July 1974

Of 6 combined children, 4 exist in both systems.

1 codes are CPC-only extensions, 1 exist only in IPC.

IPC defines codes here since 1974.

Child Classifications

Navigate with arrow keys, Enter to open

G04F 10/005 CPC only CPC only
G04F 10/02 using oscillators with passive electric resonator, e.g. lumped LC since 1974 IPC+CPC Available in IPC and CPC
G04F 10/04 by counting pulses or half-cycles of an AC since 1974 IPC+CPC Available in IPC and CPC
G04F 10/06 by measuring phase since 1974 IPC+CPC Available in IPC and CPC
G04F 10/08 using pulses produced by radio-isotopes since 1974 IPC only IPC only
G04F 10/10 by measuring electric or magnetic quantities changing in proportion to time since 1974 +1 CPC IPC+CPC Available in IPC and CPC