B61L 1/04

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Patent/Pub #TitleFiling DateIssue/Publication DatePatent Owner
5374016 Device for catching wheel deviations for track switches or crossing having tube mounted strain gauges for measuring sensing head displacementJun 17, 93Dec 20, 94VAE Aktiengesellschaft
4630792 Railway wheel detectorJan 10, 85Dec 23, 86GENERAL SIGNAL CORPORATION