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.)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
EDOUARD PIERRE FR
Original Assignee
EDOUARD PIERRE FR
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
Application filed by EDOUARD PIERRE FRfiledCriticalEDOUARD PIERRE FR
Priority to FR7221581ApriorityCriticalpatent/FR2188887A5/fr
Application grantedgrantedCritical
Publication of FR2188887A5publicationCriticalpatent/FR2188887A5/fr
G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
G09B29/00—Maps; Plans; Charts; Diagrams, e.g. route diagram
G—PHYSICS
G01—MEASURING; TESTING
G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
G01C13/00—Surveying specially adapted to open water, e.g. sea, lake, river or canal
G01C13/002—Measuring the movement of open water
G01C13/004—Measuring the movement of open water vertical movement
