AU2990930A
(en )
1931-11-12
Improvements in film sound and picture reproducers
AU2990930B
(en )
1931-11-12
Improvements in film sound and picture reproducers
CA302548A
(en )
1930-07-29
Film for picture and sound reproduction
CA305437A
(en )
1930-11-04
Tinted sound and picture film
AU2699430A
(en )
1931-01-06
Improvement in photographic film for picture and sound reproduction
CA314831A
(en )
1931-09-01
Sound and picture record film
AU2490630A
(en )
1931-04-16
Improvements in film for picture and sound reproduction
AU2745830A
(en )
1930-12-23
Improvement insound and picture record film
AU2699030A
(en )
1931-01-06
Improvement in combined motion picture and sound record
AU2699130A
(en )
1930-12-09
Improvement in combined motion picture and sound record
AU2784030A
(en )
1931-07-23
Improvements in talking picture film projectors
AU2489930A
(en )
1930-08-12
Improvements in tinted sound and picture film and method of making same
CA305443A
(en )
1930-11-04
Sound record film
CA330580A
(en )
1933-02-28
Picture and sound film
CA313763A
(en )
1931-07-28
Motion picture and sound record film
CA323514A
(en )
1932-06-21
Tone and picture film
CA313767A
(en )
1931-07-28
Motion picture and sound film
CA302625A
(en )
1930-07-29
Sound record motion picture film
CA313765A
(en )
1931-07-28
Combined motion picture and sound record
CA313764A
(en )
1931-07-28
Combined motion picture and sound record
CA298836A
(en )
1930-04-01
Sound transmission and reproduction
CA313766A
(en )
1931-07-28
Photographic film for sounds and picture purposes
AU2501830A
(en )
1930-09-02
Combined sound and colour motion picture record
CA327797A
(en )
1932-11-22
Colour and sound film
CA327798A
(en )
1932-11-22
Colour and sound film