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CA1202097A
(en)
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Railroad car wheel detector using hall effect element
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PL48652B1
(enExample)
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US3470504A
(en)
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Polarized electrical relay
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(en)
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Magnetic reed proximity switch
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ATE191583T1
(de)
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Elektronische schaltmagnetansteuerung zum einschalten und halten eines schützes
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US3168269A
(en)
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Track instruments
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CA2223067C
(en)
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Highway crossing guard mechanism controller
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US3397348A
(en)
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Proximity current detector
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US3292123A
(en)
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Permanent magnet operable reed switch
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US3341813A
(en)
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Magnetic sensor device
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CA1283723C
(en)
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Magnetic proximity switch
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US1134547A
(en)
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Circuit-closer.
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US1301949A
(en)
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Signal.
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ATE117461T1
(de)
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Auslösesystem für einen elektrischen schalter.
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US1782454A
(en)
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Electrical meter switch
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SU1170526A1
(ru)
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Термомагнитный переключатель
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US1758104A
(en)
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Magnet
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SU1690020A1
(ru)
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Высоковольтное герконовое реле
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US2988635A
(en)
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Device for operating the points of electrical toy or model railways, using permanent magnets
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CN111243466A
(zh)
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电梯广告投影装置
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US1484349A
(en)
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Railway safe-running device
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US2587513A
(en)
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Electric horn
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SU1150133A1
(ru)
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Устройство дл обнаружени движущегос по рельсам объекта
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US1862773A
(en)
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Railway signaling flasher
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RU1802883C
(ru)
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Устройство дл контрол целостности двух ферромагнитных деталей
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