Patent classifications
F
MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
Load children
F21
LIGHTING
Load children
F21S
NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
Load children
11/00
Non-electric lighting devices or systems using daylight
Load children Filter patents View analytics View as hierarchy
F21S11/007
characterised by the means for transmitting light into the interior of a building
Filter patents View analytics View as hierarchy