DK117642B
(en )
1970-05-19
Speaker and sound reproducing apparatus with such a speaker.
CH392618A
(en )
1965-05-31
Magnetic recording and reproducing device
FR1352825A
(en )
1964-02-21
Improvements in methods and devices for the identification and reproduction of documents
BE610190A
(en )
1962-03-01
Improvements in recording and sound reproduction processes.
FR1377533A
(en )
1964-11-06
Improvements in speech and sound reproducing devices for dolls and the like
BE583752A
(en )
1960-03-15
Improvements in sound recording and reproduction devices
CA624332A
(en )
1961-07-25
Sound recording and reproducing apparatus
AU256752B2
(en )
1963-10-03
Sound recording and reproducing apparatus
FR1307321A
(en )
1962-10-26
Improvements in devices such as underwater listening buoys and the like
BE641790A
(en )
1964-04-16
Recording media
FR1384082A
(en )
1965-01-04
Improvements in magnetic recording and reproduction devices
FR1402834A
(en )
1965-06-18
Improvements in recording and playback processes and device
AU1592162A
(en )
1963-10-03
Sound recording and reproducing apparatus
FR1269535A
(en )
1961-08-11
Further training in sound recording and reproduction devices
FR1314948A
(en )
1963-01-11
Sound recording and reproduction device
FR1314886A
(en )
1963-01-11
Sound recording and reproduction device
CA591918A
(en )
1960-02-02
Sound recording and reproducing apparatus
FR1329740A
(en )
1963-06-14
Recording and reproduction system
OA00619A
(en )
1966-07-15
Improvements to magnetic recording processes.
BE617707A
(en )
1962-09-17
Recording and reproduction system
FR1292066A
(en )
1962-04-27
Improvement in cinematographic projection devices allowing the recording and reproduction of sounds
FR1332606A
(en )
1963-07-19
Recording and reproducing apparatus
AU257606B2
(en )
1963-05-02
Magnetic sound recording and reproducing device
FR1362243A
(en )
1964-05-29
Magnetic recording and reproducing device with charger
CA608644A
(en )
1960-11-15
Plastic belt for sound recording and reproducing