DK20777C
(en )
1915-11-22
Apparatus for mounting the sound box by gramophones, phonographs and similar apparatus.
DK16867C
(en )
1913-01-20
Procedure for the production of sound-reproducing plates, tapes and the like, and methods and apparatus for reproducing sound by means of such sound-plates.
DK13480C
(en )
1910-08-01
Apparatus for reproducing or recording sounds.
DK17791C
(en )
1913-09-08
Procedure for recording and reproducing tones.
DK16942C
(en )
1913-02-03
Apparatus for recording pieces of music on paper tapes and the like.
DK18385C
(en )
1914-01-19
Apparatus for apparatus for mechanical reproduction of music and the like.
DK18510C
(en )
1914-03-02
Apparatus for recording, reproducing and recording sound.
DK20386C
(en )
1915-07-26
Apparatus for Receiving Underwater Audio Signals.
DK19830C
(en )
1915-02-15
Audio box or similar for Gramophones, Phonographs and similar Devices.
DK25937C
(en )
1920-05-10
Device for gramophones and similar voice machines.
DK20688C
(en )
1915-10-25
Device for cinematographic sliding discs.
GB191323717A
(en )
1914-09-24
An Improved Apparatus for Teaching Music.
DK20487C
(en )
1915-08-30
Device for self-marking sliding discs and the like.
DK17518C
(en )
1913-07-07
Apparatus for Decarburization by Cinematographic Apparatus.
DK12892C
(en )
1910-01-24
Method and Apparatus for the production of gramophone records, phonograph rollers and similar sound reproducers.
DK32029C
(en )
1923-07-30
Electric Drive for Gramophones, Phonographs and the like.
DK17882C
(en )
1913-10-06
Apparatus for Recording Working Hours.
CA132271A
(en )
1911-04-11
Playing device for zithers, etc.
FR17315E
(en )
1913-08-06
Improvement in phonographs, gramophones, etc.
FR18018E
(en )
1914-01-15
Improvement in phonographs, gramophones, etc.
DK19606C
(en )
1914-12-14
Apparatus for reproducing and transmitting sound.
DK17862C
(en )
1913-09-29
Apparatus for Turning Sheet Music.
DK28602C
(en )
1921-10-10
Device for Underwater Audio Devices.
FR481600A
(en )
1916-12-19
Reproducing device and sound amplifier, for phonographs
DK14415C
(en )
1911-04-03
Procedure and Apparatus for Recording Musical Piano Performances.