AU646622A
(en )
1923-07-24
Improvements in or relating to the vibratory diaphragms of sound producing apparatus
AU1238923A
(en )
1923-07-23
Improvements in and relating to diaphragms for acoustical instruments
AU702922A
(en )
1922-05-27
Improvements in or relating to acoustic instruments
CA217557A
(en )
1922-04-04
Vibrating diaphragm for the recording of sound
CA224081A
(en )
1922-09-26
Vibrating carbureter
AU937322A
(en )
1922-10-21
Improvements in or relating to talking-machines or like apparatus
CA215836A
(en )
1922-02-14
Method of utilizing sound vibrations
CA224612A
(en )
1922-10-10
Vibrating screen
CA227857A
(en )
1923-01-09
Sound producing device for dolls
CA235906A
(en )
1923-11-27
Sound producing device for dolls
AU161826A
(en )
1926-06-23
Improvements in or relating to diaphragms for acoustic instruments
AU40026A
(en )
1926-02-05
Improvements relating' in diaphragms for acoustic K instruments
CA237389A
(en )
1924-01-29
Production of sonorous vibrations
CA218675A
(en )
1922-05-16
Acoustic device
CA218469A
(en )
1922-05-09
Sound producer
CA269965A
(en )
1927-04-19
Sound producing instrument
AU40326A
(en )
1926-02-05
Improvements relating to diaphragms for acoustic instruments
CA224371A
(en )
1922-10-03
Production of landscape outline
CA262475A
(en )
1926-07-06
Sound diaphragm
AU629022A
(en )
1922-04-01
Improvements in or relating to apparatus forthe synthesis of ammonia by means of hyper-pressures
AU532922A
(en )
1922-05-02
Improvements in or relating to means or apparatus for use in combined cinematograph and phonograph production
CA225751A
(en )
1922-11-07
Apparatus for the production of ozone
CA220005A
(en )
1922-06-27
Process of mounting lithographs
AU2380425A
(en )
1925-12-08
Improved method of mounting acoustical diaphragms
AU2645325A
(en )
1926-01-04
Improvements in acoustic horns