DK12892C
(en )
1910-01-24
Method and Apparatus for the production of gramophone records, phonograph rollers and similar sound reproducers.
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.
DK18510C
(en )
1914-03-02
Apparatus for recording, reproducing and recording sound.
DK23107C
(en )
1918-05-21
Apparatus for Phonographic Recording and Reproduction of Telephone Transmitted Messages.
DK20777C
(en )
1915-11-22
Apparatus for mounting the sound box by gramophones, phonographs and similar apparatus.
DK19606C
(en )
1914-12-14
Apparatus for reproducing and transmitting sound.
DK9120C
(en )
1906-12-17
Apparatus for recording, storing and reproducing sound by telegraphic means.
DK18548C
(en )
1914-03-09
Apparatus for recording and recording sound.
CA124342A
(en )
1910-03-08
Apparatus for recording and reproducing music, etc.
DK16942C
(en )
1913-02-03
Apparatus for recording pieces of music on paper tapes and the like.
FR481600A
(en )
1916-12-19
Reproducing device and sound amplifier, for phonographs
ES49279A1
(en )
1911-01-01
An apparatus for recording and reproducing phonograph records.
CA121281A
(en )
1909-10-19
Diaphragm for phonographic and telephonic apparatus
DK17471C
(en )
1913-06-30
Apparatus for Phonographic Recording of Phone Calls.
DK15022C
(en )
1911-08-28
Apparatus by which the sound of speech machines and the like can be conducted and propagated.
CA122480A
(en )
1909-12-07
Synchronizing apparatus for phonographs and cinematographs
FR483874A
(en )
1917-08-17
Method and apparatus for receiving and amplifying telegraph signals
CA129511A
(en )
1910-11-29
Process and apparatus for making duplicate phonograph records
DK16830C
(en )
1912-12-30
Apparatus for Phonographic Recording of Phone Calls.
DK20601C
(en )
1915-09-27
Telephone or Microphone audio box for phonographic recording and reproduction of telephone messages.
DK14165C
(en )
1911-01-30
Method and Apparatus for Making Fermentable Sugar from Lignocellulose.
CA135184A
(en )
1911-08-29
Sound recording apparatus
FR420920A
(en )
1911-02-10
Conical phonogram and method for reproducing large-scale pieces of music
AU895507A
(en )
1907-11-26
Process and apparatus for making duplicate phonograph records
ES47513A1
(en )
1910-04-01
A speaker system for phonographs and other talking machines.