Skip to content
PCE
Search Classifications
Search for IPC and CPC classification codes or keywords
DIFF Subgroup
G01K 3/12

based upon expansion or contraction of materials

Introduced: September 1968

Full Title

Full titles differ between systems:

IPC:

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

CPC:

Thermometers giving results other than momentary value of temperature (G01K7/42 takes precedence) > giving differences of values (using thermoelectric elements G01K7/02); giving differentiated values > in respect of time, e.g. reacting only to a quick change of temperature > based upon expansion or contraction of materials

No child classifications to compare. This is a leaf node in both IPC and CPC.