CH224719A
(en )
1942-12-15
Distribution pipeline.
CH233992A
(en )
1944-08-31
Electro-acoustic device.
CH210688A
(en )
1940-07-31
Device on telephone sets with microtelephones.
DK60814C
(en )
1943-04-19
Coin apparatus for Telephone systems with Central Energy.
CH215519A
(en )
1941-06-30
Analgesia device.
CH220361A
(en )
1942-03-31
Telephone.
DK59364C
(en )
1942-01-05
Connecting device for Telephone systems with Main and Sub-exchanges.
DK60316C
(en )
1942-11-09
Connecting device for Telephone systems with Main and Sub-exchanges.
DK59184C
(en )
1941-11-10
Connecting device for Telephone systems with Main and Sub-exchanges.
ES146965A1
(en )
1941-03-01
Improvements in telegraphic systems.
DK59227C
(en )
1941-11-24
Magnetostrictive Device, especially magnetostrictive Microphone.
GR8688B
(en )
1940-01-04
INFINITE SYSTEM.
DK71277C
(en )
1950-07-24
Blood cell counting device.
ES146998A1
(en )
1941-03-01
An electric flyswatter device.
GR8945B
(en )
1940-04-13
STEREOSCOPIC DEVICE.
DK61650C
(en )
1943-11-29
Uranium system with Impulse operation.
DK60330C
(en )
1942-11-09
Tempering device.
DK65363C
(en )
1947-01-27
Impulse Sensitive Device for Use in Electrical Signaling Systems.
FI20992A
(en )
1946-01-10
Multiple telephone system
CH224323A
(en )
1942-11-15
Voting device.
CH233989A
(en )
1944-08-31
Telegraph device.
ES5120Y
(en )
1941-07-16
Perfected tap.
ES5939Y
(en )
1942-04-16
Politensor apparatus.
CH244473A
(en )
1946-09-15
Telecommunications exchange facility.
DK62838C
(en )
1944-10-30
Foam Removal Device.