Excitation or detection systems, e.g. using radio frequency signals

Introduced: January 1990

Title

Titles differ between systems:

IPC: Excitation or detection systems, e.g. using radiofrequency signals

CPC: Excitation or detection systems, e.g. using radio frequency signals

Full Title

Full titles differ between systems:

IPC:

Arrangements or instruments for measuring magnetic variables > involving magnetic resonance > Details of apparatus provided for in groups > Excitation or detection systems, e.g. using radiofrequency signals

CPC:

Arrangements or instruments for measuring magnetic variables > involving magnetic resonance (medical aspects A61B5/055; magnetic resonance gyrometers G01C19/60) > Details of apparatus provided for in groups G01R33/44 - G01R33/64 > Excitation or detection systems, e.g. using radio frequency signals

Of 3 combined children, 2 exist in both systems.

1 codes are CPC-only extensions.

IPC defines codes here since 1990.

Child Classifications

Navigate with arrow keys, Enter to open

G01R 33/323 +1 CPC CPC only CPC only
G01R 33/34 Constructional details, e.g. resonators since 1990 +6 CPC IPC+CPC Available in IPC and CPC
G01R 33/36 Electrical details, e.g. matching or coupling of the coil to the receiver since 1990 +10 CPC IPC+CPC Available in IPC and CPC