NL171847B
(en )
SOUND RECORDING AND PLAYBACK DEVICE.
DK85403C
(en )
1958-04-21
Circuits for recording and retransmitting a message received in the form of impulses.
CH288284A
(en )
1953-01-15
Device for generating at least two auxiliary records.
CH266251A
(en )
1950-01-15
Mixed circuit.
CH263431A
(en )
1949-08-31
Pseudo push-pull circuit.
CH270999A
(en )
1950-09-30
Telephone exchange.
DK75096C
(en )
1952-12-08
Coupling for counting electrical impulses.
ES174652A1
(en )
1946-10-01
IMPROVEMENTS IN TELEGRAPH SYSTEMS.
ES171459A1
(en )
1945-12-01
IMPROVEMENTS IN FACSIMILE TELEGRAPH SYSTEMS AND APPARATUS.
CH343439A
(en )
1959-12-31
Circuit arrangement for the correct length reproduction of pulses, e.g. B. Telegraphic pulses
CH309043A
(en )
1955-08-15
Teletype receiver.
CH284802A
(en )
1952-08-15
Thermosetting, stable and fast curing composition.
ES12529Y
(en )
1946-07-01
Toy device simulating cinema, sound and television.
DK76271C
(en )
1953-08-24
Coupling for generating short electrical impulses.
CH273231A
(en )
1951-01-31
Circuit for counting pulses.
ES12445Y
(en )
1946-06-01
Secret cabinet-box.
GR10870B
(en )
1946-10-17
DURATION CALENDAR.
DK71001C
(en )
1950-05-15
Process for the preparation of N- (p-arsenosobenzyl) -glycinamide and salts thereof.
DK85980C
(en )
1958-08-04
Amplifier with reverse coupling.
DK81038C
(en )
1956-05-28
Telephone exchange.
ES12488Y
(en )
1946-07-01
Radiophonic talking doll.
DK84332C
(en )
1958-02-03
Coupling for demodulation and separation of phase modulated pulses.
GR11191B
(en )
1947-06-17
ORIGINAL GAME.
DK78845C
(en )
1955-02-14
Circuits for storage and retransmission of digits.
DK76963C
(en )
1954-01-11
Coupling for receiving and demodulating frequency-modulated oscillations.