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FR DE COTONS A COUDRE ETABLISS
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FR DE COTONS A COUDRE ETABLISS
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Application filed by FR DE COTONS A COUDRE ETABLISSfiledCriticalFR DE COTONS A COUDRE ETABLISS
Application grantedgrantedCritical
Publication of FR618772ApublicationCriticalpatent/FR618772A/fr
G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY