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.)
GEORGE KEITH BULLER ELPHINSTON
Original Assignee
GEORGE KEITH BULLER ELPHINSTON
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 GEORGE KEITH BULLER ELPHINSTONfiledCriticalGEORGE KEITH BULLER ELPHINSTON
Application grantedgrantedCritical
Publication of FR522943ApublicationCriticalpatent/FR522943A/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
G10K7/00—Sirens
Landscapes
Physics & Mathematics
(AREA)
Engineering & Computer Science
(AREA)
Acoustics & Sound
(AREA)
Multimedia
(AREA)
FR522943A1919-04-051919-04-05Dispositif pour le repérage des points de chute des projectiles d'artillerie
ExpiredFR522943A
(fr)