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3089029
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Patent Grant
3089029
References
Source
Patent Number
3,089,029
Date Filed
Not available
Date Issued
Tuesday, May 7, 1963
61 years ago
CPC
G01P15/16 - by evaluating the time-derivative of a measured speed signal
B61L17/023 - Signalling; Signals with multiple indicating means
G01S13/92 - for velocity measurement
US Classifications
246 - Railway switches and signals
104 - Railways
342 - Communications: directive radio wave systems and devices
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