Patent classifications
F
MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
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F21
LIGHTING
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F21V
FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
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25/00
Safety devices structurally associated with lighting devices
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F21V25/12
Flameproof or explosion-proof arrangements
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F21V25/125
using intumescent material, i.e. using materials which swells up as a result of heat exposure
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