F21Level 2

LIGHTING

GET/api/v1/systems/patent_cpc/nodes/F21

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F21HINCANDESCENT MANTLES

F21KNON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE

F21LLIGHTING DEVICES OR SYSTEMS THEREOF, BEING PORTABLE OR SPECIALLY ADAPTED FOR TRANSPORTATION

F21SNON-PORTABLE LIGHTING DEVICES

F21VFUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF

F21WINDEXING SCHEME ASSOCIATED WITH SUBCLASSES

F21YINDEXING SCHEME ASSOCIATED WITH SUBCLASSES

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