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F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
F21S13/00—Non-electric lighting devices or systems employing a point-like light source; Non-electric lighting devices or systems employing a light source of unspecified shape
F21S13/02—Devices intended to be fixed, e.g. ceiling lamp, wall lamp
F21S13/10—Devices intended to be fixed, e.g. ceiling lamp, wall lamp with a standard, e.g. street lamp
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Engineering & Computer Science
(AREA)
General Engineering & Computer Science
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Non-Portable Lighting Devices Or Systems Thereof
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Aus mehreren Dochtröhren bestehender Brenner mit Reflektorplatte für Petroleum-Sicherheitslampen und mit Vorrichtung zum Auslöschen einzelner Flämmchen
Improvements in or relating to apparatus for the heat treatment of elongated metal bodies having longitudinally spaced surface portions to be heat treated