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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PHOTO MANUFAKTUR ROBERT BAIER
Original Assignee
PHOTO MANUFAKTUR ROBERT BAIER
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Filing date
Publication date
Application filed by PHOTO MANUFAKTUR ROBERT BAIERfiledCriticalPHOTO MANUFAKTUR ROBERT BAIER
Application grantedgrantedCritical
Publication of FR683701ApublicationCriticalpatent/FR683701A/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
Landscapes
Physics & Mathematics
(AREA)
General Physics & Mathematics
(AREA)
Spectroscopy & Molecular Physics
(AREA)
FR683701D1928-10-271929-10-22Appareil auxiliaire pour la détermination rapide des temps de pose photographiques
ExpiredFR683701A
(fr)