DIFF Subgroup
H01S 3/04 Arrangements for thermal management
Introduced: September 1968
Full Title
Full titles differ between systems:
IPC:
Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range > Constructional details > Arrangements for thermal management
CPC:
Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range (semiconductors lasers H01S5/00) > Constructional details > Arrangements for thermal management
CPC subdivides this area 4x more granularly than IPC with 6 additional codes.
6 codes are CPC-only extensions.
IPC defines codes here since 1990.
Child Classifications
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