IPC Classification

Class code (prefix) Descriptions Number of results
F21H 1/00 Incandescent mantlesSelection of imbibition liquids therefor
F21H 1/02 Incandescent mantlesSelection of imbibition liquids therefor characterised by the material thereof
F21H 3/00 Manufacturing incandescent mantlesTreatment prior to use, e.g. burning-offMachines for manufacturing
F21H 5/00 Solid incandescent bodies
F21H 7/00 Other incandescent bodies