Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filedfiledCritical
Publication of BE689056ApublicationCriticalpatent/BE689056A/xx
F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
F21V33/00—Structural combinations of lighting devices with other articles, not otherwise provided for
F21V33/0088—Ventilating systems
Landscapes
Engineering & Computer Science
(AREA)
General Engineering & Computer Science
(AREA)
Light Sources And Details Of Projection-Printing Devices
(AREA)