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.)
Thales SA
Societe Francaise Radio Electrique
Original Assignee
CSF Compagnie Generale de Telegraphie sans Fil SA
Societe Francaise Radio Electrique
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 CSF Compagnie Generale de Telegraphie sans Fil SA, Societe Francaise Radio ElectriquefiledCriticalCSF Compagnie Generale de Telegraphie sans Fil SA
Application grantedgrantedCritical
Publication of FR1037639ApublicationCriticalpatent/FR1037639A/fr
G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
G10K11/18—Methods or devices for transmitting, conducting or directing sound
G10K11/26—Sound-focusing or directing, e.g. scanning
G10K11/28—Sound-focusing or directing, e.g. scanning using reflection, e.g. parabolic reflectors
Landscapes
Physics & Mathematics
(AREA)
Engineering & Computer Science
(AREA)
Acoustics & Sound
(AREA)
Multimedia
(AREA)
FR1037639D1951-03-221951-03-22Perfectionnements aux dispositifs ultra-sonores
ExpiredFR1037639A
(fr)