CH347233A
(en )
1960-06-30
Microwave transmission line
CH311430A
(en )
1955-11-30
Microwave coupling device.
CH310060A
(en )
1955-09-30
Traveling wave tube with a conductive screw.
CH328248A
(en )
1958-02-28
Arrangement with an electron tube for very high frequencies
CH304343A
(en )
1955-01-15
Establishment on cleaning equipment.
CH301218A
(en )
1954-08-31
Electron tube for very short waves.
CH309316A
(en )
1955-08-31
Electron tube for very short waves.
CH312419A
(en )
1955-12-31
Circuit arrangement with an electron tube for very short waves.
CH297878A
(en )
1954-04-15
Hilt.
NL171507B
(en )
STEP ATTENUATOR.
CH315026A
(en )
1956-07-15
Arrangement with an electron tube for very short waves
CH312420A
(en )
1955-12-31
Electron tube for very short waves.
NL180695B
(en )
ELECTROMAGNETIC SIGNAL CONVERTER.
CH268058A
(en )
1950-04-30
Radio station with an antenna system for ultra-short waves.
AT190397B
(en )
1957-06-25
Truck with an unloading device
NL172387B
(en )
TELECOMMUNICATIONS SYSTEM.
CH310630A
(en )
1955-10-31
Electron tube for very high frequencies.
CH310662A
(en )
1955-10-31
Waveguide frequency converter.
CH315748A
(en )
1956-08-31
Telegraph installation
CH308119A
(en )
1955-06-30
Metal sleeve for an electrical device.
AT180108B
(en )
1954-11-10
Electron tube for microwaves
DK81717C
(en )
1957-01-07
Electronic time attenuator.
DK84113C
(en )
1957-12-23
Round beam antenna.
FR1075784A
(en )
1954-10-20
Self-unloading tank
CH310659A
(en )
1955-10-31
Circuit arrangement for locking or unlocking an amplifier tube.