DK106677C
(en )
1967-03-06
Sound reproduction apparatus.
DK105987C
(en )
1966-12-05
Device for recording and reproducing apparatus.
DK109056C
(en )
1968-03-11
Magnetic recording and reproducing apparatus.
BE588588A
(en )
1960-07-01
Parametric amplifier.
AT235595B
(en )
1964-09-10
Tape recorder, in particular dictation machine
DK100681C
(en )
1964-12-28
Device for dictation machines.
DK103836C
(en )
1966-02-28
Method for recording and playback of magnetic recordings, and apparatus for performing the method.
DK102210C
(en )
1965-07-19
Apparatus for magnetic recordings, in particular dictation apparatus.
DK103260C
(en )
1965-12-06
Apparatus for scanning magnetic records.
DK97263C
(en )
1963-11-04
Apparatus for teaching spelling.
NL143016B
(en )
1974-08-15
FLUIDUM AMPLIFIER.
BE597778A
(en )
1961-03-31
Reproduction method
DK105210C
(en )
1966-09-05
Method for recording or scanning magnetic recordings and apparatus for performing the method.
DK110162C
(en )
1969-10-06
Apparatus with balancing mechanism.
DK101142C
(en )
1965-03-01
Mnemotechnical apparatus.
DK100395C
(en )
1964-11-23
Apparatus for magnetic recording or reproducing or recording and reproducing, in particular a dictation apparatus.
OA01306A
(en )
1969-02-15
Advanced training in conveyors.
DK106526C
(en )
1967-02-13
Core for magnetic heads.
DK111271B
(en )
1968-07-15
Magnetic recording device.
CA621831A
(en )
1961-06-13
Magnetic record controlled sorting apparatus
DK105628C
(en )
1966-10-17
Gas producing apparatus.
DK103134C
(en )
1965-11-22
Track stop system.
DK86937C
(en )
1959-02-23
Multiple recording device.
CA625291A
(en )
1961-08-08
Apparatus for magnetic recording
DK100697C
(en )
1965-01-04
Information recording apparatus.