IPC Subgroup
G01K 11/26 of resonant frequencies
Introduced: September 1968
Last revised: January 2006
Full Title
Measuring temperature based on physical or chemical changes not covered by group , , , or > using measurement of acoustic effects > of resonant frequencies
Classification Context
- Section:
- PHYSICS
- Class:
- MEASURING; TESTING
- Subclass:
- MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR