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
Priority claimed from NO1400/73Aexternal-prioritypatent/NO137798C/en
Publication of NO763389LpublicationCriticalpatent/NO763389L/no
Application filed by Bjoern R HopefiledCriticalBjoern R Hope
Priority to NO763389ApriorityCriticalpatent/NO141967C/en
Publication of NO141967BpublicationCriticalpatent/NO141967B/en
Publication of NO141967CpublicationCriticalpatent/NO141967C/en
NO763389A1973-04-051976-10-05
APPARATUS FOR LEVEL MEASUREMENT OF FLUID LIQUIDS, SOLIDS OR COMBINATION OF THESE IN TANKS, CONTAINERS, POOL OR LIKE
NO141967C
(en)
Recent progress in tank, shipboard, and helicopter tests of the Fraunhofer line discriminator(Developing line discriminator for detecting substances that fluoresce in water near sodium D 2 Fraunhofer line)