CH24954A
(en )
1903-03-15
Recording diaphragm for phonographs and graphones
FR334753A
(en )
1903-12-31
Diaphragm amplifier and tensioner for phonograph and graphophone
CH24499A
(en )
1903-01-15
Receiver for phonographs and graphophones
FR343623A
(en )
1904-10-11
Diaphragm for phonographs and other sound recording and reproducing apparatus
FR328513A
(en )
1903-07-16
An amplifier for phonographs and graphophones
FR403035A
(en )
1909-10-23
Fixed diaphragm recording and reproducing diaphragm for phonographs
FR334725A
(en )
1903-12-30
Regular recording of waves on discs for talking machines
FR345698A
(en )
1904-12-08
Diaphragm of graphophones and other instruments for the reproduction of voice and sounds
FR342840A
(en )
1904-09-17
Rotating and hygienic diaphragm for phones
FR372541A
(en )
1907-04-10
Improvements to the recording and reproducing diaphragm for phonographs
CH23496A
(en )
1902-07-31
Improved record for phonography
FR329850A
(en )
1903-08-06
Reproductive diaphragm for phonographs and graphophones, called "the virtuoso"
FR355635A
(en )
1905-11-08
Coupling of microphone diaphragms for phonographs, gramophones and others
FR360018A
(en )
1906-04-11
Sound regulator for diaphragms of sound recording and reproducing machines
FR332184A
(en )
1903-10-17
Plate for phonographs
FR346207A
(en )
1905-01-07
Recorder for phonographs
FR4637E
(en )
1905-09-02
Recorder for phonographs
CH25462A
(en )
1903-05-15
Instrument for receiving and reproducing sound
FR10814E
(en )
1909-10-08
Advanced reproducing diaphragm system for sapphire and needle discs for phonographs and gramophones
FR12615E
(en )
1910-10-20
Advanced reproducing diaphragm system for sapphire and needle discs for phonographs and gramophones
FR397808A
(en )
1909-05-18
Advanced reproducing diaphragm system for sapphire and needle discs for phonographs and gramophones
FR379888A
(en )
1907-11-21
Improvements to the recording and reproducing diaphragm for disc or cylinder phonographs
FR331879A
(en )
1903-10-06
Roller support, for the acoustic horn of phonographs
FR342250A
(en )
1904-09-02
Horn vibrating plate diaphragm for talking disc machines
FR332337A
(en )
1903-10-26
Apparatus for the manufacture of recorded cylinders of phonographs