AU142926A - Improvements in or relating to acoustic amplifiers and radiators suitable for use with loud speaking telephonic receivers andother sound producing or reproducing apparatus - Google Patents

Improvements in or relating to acoustic amplifiers and radiators suitable for use with loud speaking telephonic receivers andother sound producing or reproducing apparatus

Info

Publication number
AU142926A
AU142926A AU1429/26A AU142926A AU142926A AU 142926 A AU142926 A AU 142926A AU 1429/26 A AU1429/26 A AU 1429/26A AU 142926 A AU142926 A AU 142926A AU 142926 A AU142926 A AU 142926A
Authority
AU
Australia
Prior art keywords
andother
relating
reproducing apparatus
sound producing
loud speaking
Prior art date
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.)
Expired
Application number
AU1429/26A
Inventor
Alfred Graham Edward
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.)
Individual
Original Assignee
Individual
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of AU142926A publication Critical patent/AU142926A/en
Expired legal-status Critical Current

Links

AU1429/26A 1926-04-14 Improvements in or relating to acoustic amplifiers and radiators suitable for use with loud speaking telephonic receivers andother sound producing or reproducing apparatus Expired AU142926A (en)

Publications (1)

Publication Number Publication Date
AU142926A true AU142926A (en) 1927-05-03

Family

ID=

Similar Documents

Publication Publication Date Title
AU142926A (en) Improvements in or relating to acoustic amplifiers and radiators suitable for use with loud speaking telephonic receivers andother sound producing or reproducing apparatus
AU567227A (en) Improvements in or relating to acoustic amplifiers and radiators suitable for use with loud speaking telephonic receivers andother sound producing or reproducing apparatus
AU579727A (en) Improvements in or relating to sound amplifying horns for talking machines, loud speakers and other like sound reproducing apparatus
AU204126A (en) Improvements in and relating to amplifiers for talking machines and like sound reproducing apparatus
AU382526A (en) Improvements in and relating to amplifiers for talking machines and like sound reproducing apparatus
AU2926A (en) Improvements in and relating to sound reproducing apparatus
AU1452133A (en) Improvements in dynamic speakers, microphones, andthe like sound reproducing and recording apparatus
AU418626A (en) Improvements in amplifiers for sound reproducing instruments
CA306951A (en) Sound amplifier and reproducing apparatus
AU2477630A (en) Improvements in amplifying horns for use with apparatus forthe reproduction of sound anda process forthe manufacture thereof
AU307926A (en) Improvements in and relating to apparatus for transmitting or reproducing sound
AU2384225A (en) Improvements in or connected with loud speakers and other sound receiving, sound reproducing or sound transmitting apparatus
AU2077424A (en) Improvements in and relating to sound reproducing apparatus
AU1170033A (en) Improvements in and relating to the mounting of loud speakers of the conical diaphragm type in cabinets for sound reproducing apparatus
AU2158229A (en) Improvements In and relating to apparatus for reproducing recording or amplifying sound
AU340526A (en) Improvements in or relating to sound reproducing apparatus
AU340626A (en) Improvements in or relating to sound reproducing apparatus
AU302426A (en) Improvements in and relating to sound reproducing apparatus
CA307006A (en) Acoustic apparatus with sound diaphragm
CA307007A (en) Acoustic apparatus with sound diaphragm
CA253195A (en) Diaphragm used in sound reproduction
AU1568428A (en) Improvements in or relating to apparatus for reproducing or recording sound waves
AU1865424A (en) Improvements in or relating to sound directing, radiating or amplifying horns and like acoustic apparatus
AU1781724A (en) Improvements in or relating to combined phonographic and wireless sound reproducing means
AU1309828A (en) Improvements in sound reproducing appliances and amplifiers