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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Charbonnages de France CDF
Original Assignee
Charbonnages de France CDF
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Filing date
Publication date
Application filed by Charbonnages de France CDFfiledCriticalCharbonnages de France CDF
Application grantedgrantedCritical
Publication of FR1139661ApublicationCriticalpatent/FR1139661A/fr
G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
G01C7/00—Tracing profiles
G01C7/06—Tracing profiles of cavities, e.g. tunnels
G—PHYSICS
G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
G03B37/00—Panoramic or wide-screen photography; Photographing extended surfaces, e.g. for surveying; Photographing internal surfaces, e.g. of pipe
G03B37/005—Photographing internal surfaces, e.g. of pipe
Landscapes
Engineering & Computer Science
(AREA)
Physics & Mathematics
(AREA)
General Physics & Mathematics
(AREA)
Multimedia
(AREA)
Radar, Positioning & Navigation
(AREA)
Remote Sensing
(AREA)
FR1139661D1955-11-031955-11-03Perfectionnements aux procédés et appareils pour le relèvement des profils de galeries et de terrassements
ExpiredFR1139661A
(fr)