Legal status (The legal status 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 status listed.)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Dr-Ing Schneider & Naujoks Elektrizitaets-Ges M B
Original Assignee
Dr-Ing Schneider & Naujoks Elektrizitaets-Ges M B
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 filed by Dr-Ing Schneider & Naujoks Elektrizitaets-Ges M BfiledCriticalDr-Ing Schneider & Naujoks Elektrizitaets-Ges M B
Application grantedgrantedCritical
Publication of FR440260ApublicationCriticalpatent/FR440260A/fr
F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
F21V9/00—Elements for modifying spectral properties, polarisation or intensity of the light emitted, e.g. filters
F21V9/40—Elements for modifying spectral properties, polarisation or intensity of the light emitted, e.g. filters with provision for controlling spectral properties, e.g. colour, or intensity
Landscapes
Physics & Mathematics
(AREA)
Spectroscopy & Molecular Physics
(AREA)
Engineering & Computer Science
(AREA)
General Engineering & Computer Science
(AREA)
FR440260A1911-02-171912-02-16Appareil d'éclairage pour l'éclairage indirect des scènes de théatres
ExpiredFR440260A
(fr)