|  | F |
SECTION F — MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING

LIGHTING AND HEATING

|  | F21 |
LIGHTING (electric aspects or elements Section H, e.g. electric light sources Fulltext... Hierarchy... Expanded...H01J, Fulltext... Hierarchy... Expanded...H01K, Fulltext... Hierarchy... Expanded...H05B)

|  | F21 |
Note(s) Attention is drawn to the note (Note III) following the Contents of Section of Section H. In this class, the following terms are used with the meanings indicated: "Portable" means "intended to be carried personally". "Non-portable" means "not intended to be carried personally, even if capable of being moved from place to place". "Electric" includes "not stated to be non-electric".

|  | F21H |
MANTLES; OTHER INCANDESCENT BODIES HEATED BY COMBUSTION (arrangements thereof Fulltext... Hierarchy... Expanded...F21V 36/00; burners Fulltext... Hierarchy... Expanded...F23D)

|  | F21K |
LIGHT SOURCES NOT OTHERWISE PROVIDED FOR

|  | F21L |
PORTABLE LIGHTING DEVICES

|  | F21M |
NON-PORTABLE BEAM LIGHTING DEVICES OR SYSTEMS (signal lighting devices Fulltext... Hierarchy... Expanded...F21Q)

|  | F21P |
NON-PORTABLE DEVICES OR SYSTEMS FOR FLOOD-LIGHTING BUILDINGS, LIGHTING FOUNTAINS, LIGHTING STAGES, AND FESTIVAL LIGHTING (beam lighting devices Fulltext... Hierarchy... Expanded...F21M; decorative lighting devices for domestic use Fulltext... Hierarchy... Expanded...F21S)

|  | F21Q |
NON-PORTABLE LIGHTING DEVICES FOR SIGNALLING (arrangements or adaptation of optical signalling devices for vehicles, see the relevant classes Fulltext... Hierarchy... Expanded...Fulltext... Hierarchy... Expanded...B60-B64; burners, combustion apparatus Fulltext... Hierarchy... Expanded...F23; signalling arrangements or devices, other than lamps or shutters therefor, Fulltext... Hierarchy... Expanded...G08B)

|  | F21S |
NON-PORTABLE LIGHTING DEVICES OR SYSTEMS, NOT OTHERWISE PROVIDED FOR

|  | F21V |
DETAILS OF LIGHTING DEVICES, OF GENERAL APPLICATION

|  | F21V |
Note(s) In this sub-class have been included only those lighting device details which were considered to be of a kind applicable to the lighting devices of more than one of the sub-classes Fulltext... Hierarchy... Expanded...F21L, Fulltext... Hierarchy... Expanded...F21M, Fulltext... Hierarchy... Expanded...F21P, Fulltext... Hierarchy... Expanded...F21Q, Fulltext... Hierarchy... Expanded...F21S. Inventions concerned with details of the kinds provided for are classified in this sub-class, even though they are only stated to be applied to a device of a single sub-class.