DIFF Subgroup
H01S 3/20 Liquids
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 > characterised by the material used as the active medium > Liquids
CPC:
Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range (semiconductors lasers H01S5/00) > characterised by the material used as the active medium > Liquids
IPC and CPC are identically structured here. All 2 subcodes exist in both systems.
IPC defines codes here since 1990.
Child Classifications
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