IPC Subgroup
G01K 3/12 based upon expansion or contraction of materials
Introduced: September 1968
Last revised: January 2006
Full Title
Thermometers giving results other than momentary value of temperature > giving differences of values; giving differentiated values > in respect of time, e.g. reacting only to a quick change of temperature > based upon expansion or contraction of materials
Classification Context
- Section:
- PHYSICS
- Class:
- MEASURING; TESTING
- Subclass:
- MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR