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PCE
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Search for IPC and CPC classification codes or keywords
DIFF Subgroup
H01S 3/106

by controlling devices placed within the cavity ( H01S3/13 take precedence)

Introduced: January 1985

Title

Titles differ between systems:

IPC: by controlling devices placed within the cavity

CPC: by controlling devices placed within the cavity ( H01S3/13 take precedence)

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 > Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating > by controlling devices placed within the cavity

CPC:

Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range (semiconductors lasers H01S5/00) > Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating > by controlling devices placed within the cavity ( H01S3/13 take precedence)

CPC subdivides this area 5x more granularly than IPC with 7 additional codes.

7 codes are CPC-only extensions.

IPC defines codes here since 1985.

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