|
CA1202097A
(en)
|
|
Railroad car wheel detector using hall effect element
|
|
RU2003104021A
(ru)
|
|
Устройство детектора
|
|
US3994236A
(en)
|
|
Switch for magnetic suspension railroad
|
|
PL48652B1
(enExample)
|
|
|
|
US3187127A
(en)
|
|
Magnetic reed proximity switch
|
|
ATE191583T1
(de)
|
|
Elektronische schaltmagnetansteuerung zum einschalten und halten eines schützes
|
|
US3168269A
(en)
|
|
Track instruments
|
|
CA2223067C
(en)
|
|
Highway crossing guard mechanism controller
|
|
US3397348A
(en)
|
|
Proximity current detector
|
|
US3569880A
(en)
|
|
Magnetically operated current sensor
|
|
US3341813A
(en)
|
|
Magnetic sensor device
|
|
US4745383A
(en)
|
|
Magnetic proximity switch
|
|
US1134547A
(en)
|
|
Circuit-closer.
|
|
US1301949A
(en)
|
|
Signal.
|
|
US2362570A
(en)
|
|
Operating device for impulse-controlled instruments
|
|
US1782454A
(en)
|
|
Electrical meter switch
|
|
US1758104A
(en)
|
|
Magnet
|
|
FI96253C
(fi)
|
|
Laukaisulaite sähköistä kytkintä varten
|
|
SU1690020A1
(ru)
|
|
Высоковольтное герконовое реле
|
|
US1092283A
(en)
|
|
Relay.
|
|
CN111243466A
(zh)
|
|
电梯广告投影装置
|
|
US1390067A
(en)
|
|
Railway-crossing signal
|
|
US1484349A
(en)
|
|
Railway safe-running device
|
|
US2587513A
(en)
|
|
Electric horn
|
|
SU1150133A1
(ru)
|
|
Устройство дл обнаружени движущегос по рельсам объекта
|