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MARTINEAU HENRI LEON
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MARTINEAU HENRI LEON
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Priority claimed from FR67095Aexternal-prioritypatent/FR1494819A/fr
Application filed by MARTINEAU HENRI LEONfiledCriticalMARTINEAU HENRI LEON
Priority to FR161048ApriorityCriticalpatent/FR95435E/fr
Application grantedgrantedCritical
Publication of FR95435EpublicationCriticalpatent/FR95435E/fr
G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
G01N21/41—Refractivity; Phase-affecting properties, e.g. optical path length
G01N21/4133—Refractometers, e.g. differential
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FR161048A1966-06-271968-07-29Procédé pour le dosage des gaz et installation pour la mise en oeuvre de ce procédé ou procédé similaire.
ExpiredFR95435E
(fr)