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.)
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ABB Training Center GmbH and Co KG
Original Assignee
Hartmann and Braun AG
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Filing date
Publication date
Application filed by Hartmann and Braun AGfiledCriticalHartmann and Braun AG
Application grantedgrantedCritical
Publication of FR899482ApublicationCriticalpatent/FR899482A/fr
G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
G01J1/00—Photometry, e.g. photographic exposure meter
G01J1/42—Photometry, e.g. photographic exposure meter using electric radiation detectors
G01J1/4209—Photoelectric exposure meters for determining the exposure time in recording or reproducing
Landscapes
Physics & Mathematics
(AREA)
General Physics & Mathematics
(AREA)
Spectroscopy & Molecular Physics
(AREA)
FR899482D1942-11-261943-11-08Dispositif de commande d'éclairage pour dispositifs de réglage d'éclairage électrique
ExpiredFR899482A
(fr)