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JPH01237486A
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Multiplexed optical fiber type railroad crossing obstruction detector
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JPH01237484A
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Detecting apparatus for breakage of gate bar of railroad crossing
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JPH01231130A
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Abnormality detecting device by comparison of bit data
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JPH01191538A
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Fail safe type fault detection method in duplex system
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JPS6388689A
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Fingerprint collation type managing method
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JPS61228375A
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Apparatus for detecting obstacle of double system railroad crossing
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JPS5981781A
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Prevention of illegal riding with season ticket
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JPS5741254A
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Automatic chain blockading method
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JPS5635286A
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Regular ticket issuing system
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JPS5585131A
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Automatic restart unit for thyristor flip flop
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JPS5585130A
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Automatic restart unit for thyristor flip flop
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JPS54113205A
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Communication transmitting device and method
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JPS5498107A
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Relay transmission system for train centralized controller
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JPS5462482A
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Transmission system between nonnpower source car and ground of moving body
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JPS5459959A
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Method of recording train service
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JPS5352099A
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Method of detecting moving target using uhf
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JPS5326010A
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Information code made by adding oneebit even parity to group selecting fourrbit binary code
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JPS5326009A
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Method of indicating train number
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JPS537384A
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Method of detecting moving object by ultrashort waves
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JPS52137913A
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Circuit for detecting transmitting output level with frequency selecting function
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