IPC Subgroup
G01R 23/18 with provision for recording frequency spectrum
Introduced: September 1968
Last revised: January 2006
Full Title
Arrangements for measuring frequencies; Arrangements for analysing frequency spectra > Spectrum analysis; Fourier analysis > with provision for recording frequency spectrum
Classification Context
- Section:
- PHYSICS
- Class:
- MEASURING; TESTING
- Subclass:
- MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES