H01K 7/02 for producing a narrow beam of light; for approximating a point-like source of light, e.g. for searchlight, for cinematographic projector (producing narrow beams by optical means external to lamp F21V)
Introduced: September 1968
Title
Titles differ between systems:
IPC: for producing a narrow beam of light; for approximating a point-like source of light, e.g. for searchlight, for cinematographic projector
CPC: for producing a narrow beam of light; for approximating a point-like source of light, e.g. for searchlight, for cinematographic projector (producing narrow beams by optical means external to lamp F21V)
Full Title
Full titles differ between systems:
Lamps for purposes other than general lighting > for producing a narrow beam of light; for approximating a point-like source of light, e.g. for searchlight, for cinematographic projector
Lamps for purposes other than general lighting (H01K9/00 - H01K13/00 take precedence) > for producing a narrow beam of light; for approximating a point-like source of light, e.g. for searchlight, for cinematographic projector (producing narrow beams by optical means external to lamp F21V)
No child classifications to compare. This is a leaf node in both IPC and CPC.