CPC Subgroup
F21V 17/02 with provision for adjustment (F21V17/04 - F21V17/08 take precedence)
Full Title
Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages (of light sources or light holders F21V19/00) > with provision for adjustment (F21V17/04 - F21V17/08 take precedence)