AU117931A
(en )
1931-12-03
Improvements in or relating to cameras
AU375831A
(en )
1932-01-07
Improvements in or relating to folding cameras
AU304131A
(en )
1932-03-24
Improvements in or relating to paste-pots
AU3831A
(en )
1931-06-04
Improvements in or relating to pulverisers
AU294831A
(en )
1932-08-18
Improvements in or relating to television
AU2754030A
(en )
1931-02-05
Improvements in or relating to colour photography
AU131331A
(en )
1931-06-25
Improvements in or relating to tyre-supporting constructions
AU147631A
(en )
1931-07-16
Improvements in or relating to microphones
AU98531A
(en )
1932-03-10
Improvements in or relating to loudspeakers
AU119631A
(en )
1931-12-03
Improvements in or relating to condensers
AU450331A
(en )
1932-06-30
Improvements in or relating to photoelectric devices
AU205131A
(en )
1931-08-06
Improvements in or relating to photoelectric devices
AU205031A
(en )
1932-01-28
Improvements in or relating to photoelectric devices
AU547831A
(en )
1933-01-06
Improvements in or relating to aerials
AU28931A
(en )
1932-01-28
Improvements in or relating to aerials
AU145931A
(en )
1931-07-30
Improvements in or relating to aerials
AU550631A
(en )
1932-05-12
Improvements in or relating to cinematograph apparatus
AU406631A
(en )
1932-04-14
Improvements in or relating to photocells
AU8631A
(en )
1931-12-24
Improvements in or relating to horseshoes
AU207331A
(en )
1932-08-18
Improvements in or relating to windows
AU341431A
(en )
1932-08-18
Improvements in or relating to kettles
AU382931A
(en )
1932-02-25
Improvements in crank construction
AU8831A
(en )
1931-09-03
Improvements in or relating to parachutes
AU2746330A
(en )
1931-02-05
Improvement in filmpack construction
AU6131A
(en )
1931-12-17
Improvements in or relating to box-opening implements