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11/02/1971
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04661468
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Title:
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AUTOMATIC CAR IDENTIFICATION SYSTEM
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04753114
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05001970
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05066971
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05076719
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04/03/1973
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05107656
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Title:
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TRAIN DETECTION SYSTEM FOR RAILROAD GRADE
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05115247
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05115491
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05116033
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05120993
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05124365
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05124374
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05150550
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05153966
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05165626
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05170927
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05180635
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05180644
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05191412
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05213570
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05228505
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05247552
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05251369
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02/26/1974
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Application #:
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05256888
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Filing Dt:
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05/25/1972
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Title:
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TRAIN SPEED CONTROL SYSTEM
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05258879
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05268663
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05286872
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05287103
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05289768
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05289971
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05308495
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05313608
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05320311
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05388370
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05398250
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07/01/1975
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05404751
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10/09/1973
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Title:
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TRAIN DETECTION AND CONTROL SYSTEM
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05404766
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