IPC Definitions - January 01, 2012
G11B 7/125 - Definition
Attention is drawn to the following places, which may be of interest for search:
Light-emitting diodes | H01L 33/00 |
Semiconductor lasers | H01S 5/00 |
Electro-, magneto-, or acousto-optical modulators | G02F 1/00 |
Optical diaphragms | G03B 9/02 |