DK70011C
(en )
1949-10-03
Sound carrier for magnetic recording.
DK66382C
(en )
1948-03-01
Method and Apparatus for Erasing Magnetic Sound Records.
CH225592A
(en )
1943-02-15
Method for eliminating amplitude fluctuations in magnetic sound recording.
FR883022A
(en )
1943-06-22
Method and device for canceling magnetic sound recordings
CH232782A
(en )
1944-06-15
Method and device for evaluating recording strips.
DK55822C
(en )
1939-02-13
Procedure and Apparatus for Recording Sound.
DK61022C
(en )
1943-06-15
Apparatus for Determining Conception Time and Redemption Day.
CH225661A
(en )
1943-02-15
Method and device for demagnetizing steel bodies.
DK62181C
(en )
1944-04-24
Briquette Procedure and Apparatus.
DK65399C
(en )
1947-02-10
Method and Apparatus for Automatic Alignment Signal Sign.
DK67911C
(en )
1948-11-08
Method and apparatus for stereophonic sound recording or sound transmission and sound reproduction.
DK68860C
(en )
1949-04-04
Procedure and apparatus for electro-optical tone recording in Braille.
DK69312C
(en )
1949-06-07
Procedure and apparatus for electro-optical tone recording in Braille.
DK60739C
(en )
1943-03-29
Sound reproducing apparatus.
DK62510C
(en )
1944-07-31
Apparatus for receiving and recording telegraph signals.
DK65484C
(en )
1947-08-04
Apparatus for Reproducing Images.
DK61272C
(en )
1943-08-30
Apparatus for Recording Tone Fluctuations.
DK64882C
(en )
1946-10-14
Magnetic Sound Recording Method.
DK66872C
(en )
1948-05-24
Magnetic Sound Recording Method.
DK62141C
(en )
1944-04-11
Procedure and Apparatus for Joining Film Pieces.
DK74819C
(en )
1952-10-13
Apparatus for forming and recovering convulsions.
DK61054C
(en )
1943-06-21
Procedure and Apparatus for Drying Fuel.
DK65075C
(en )
1946-11-18
Method and Apparatus for Time Marking by Oscillograph Recordings.
DK70010C
(en )
1949-10-03
Apparatus for removing amplitude variations by magnetic sound recording.
DK65335C
(en )
1947-01-13
Apparatus for Wetting and Cutting Adhesive Tape.