FR400044A
(en )
1909-07-16
Acoustic arm for phonographs and similar devices
CH48116A
(en )
1910-09-16
Acoustic arm for phonographs and similar devices
FR429002A
(en )
1911-09-13
Acoustic arm for phonographs
FR396326A
(en )
1909-04-07
Advanced acoustic arm device for phonograph
FR409799A
(en )
1910-04-30
Phototelephony devices
FR353051A
(en )
1905-09-01
Record for phonographic devices
FR418910A
(en )
1910-12-22
Portable phonograph for hawkers and bonisseurs
CH46723A
(en )
1910-05-02
Acoustic arm for diaphrams of talking disc machines
CA172013A
(en )
1916-09-19
Sound reproducing device
FR401386A
(en )
1909-08-27
Synchronizer for combined cinematographs and phonographs
FR485456A
(en )
1918-01-15
Acoustic arm for phonograph
FR404704A
(en )
1909-12-10
Reproduction device for sound instruments
FR410926A
(en )
1910-06-02
Phonograph
FR404252A
(en )
1909-11-27
Support for rotating electromagnetic ignition devices
FR413465A
(en )
1910-08-10
Pavilion for phonographs
FI3865A
(en )
1909-10-21
Gramophone sound membrane enhancement
FR380384A
(en )
1907-12-06
Acoustic arm for talking machines
FR398513A
(en )
1909-06-07
Device for increasing the purity of sound in graphophones
FR401639A
(en )
1909-09-06
Device for recording and playing music
FR407923A
(en )
1910-03-14
Stabilizer for aviation devices
FR421366A
(en )
1911-02-21
Improvement of sound collectors in telephone devices
CH44854A
(en )
1909-09-16
Bell horns for gramophones and phonographs
FR426625A
(en )
1911-07-11
Diaphragm for phonographs and speaking machines in general
CH49629A
(en )
1911-03-16
gramophone
FR362251A
(en )
1906-06-14
Devices for the synchronous operation of combined cinematographs and phonographs