E01B 3/34

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Patent/Pub #TitleFiling DateIssue/Publication DatePatent Owner
2024/0229,364 PROCESS AND SYSTEM FOR LAYING TRACKS FOR UNDERGROUND, RAILWAY AND TRAMWAY LINESMar 05, 21Jul 11, 24OVERAIL S.R.L.
2024/0133,125 PROCESS AND SYSTEM FOR LAYING TRACKS FOR UNDERGROUND, RAILWAY AND TRAMWAY LINESMar 05, 21Apr 25, 24OVERAIL S.R.L.
2021/0131,040 CONCRETE CROSSTIEJan 15, 21May 06, 21Not available
2021/0123,191 FIBER-REINFORCED PRESTRESSED REINFORCED CONCRETE SLEEPERJun 11, 18Apr 29, 21CHINA ACADEMY OF RAILWAY SCIENCES CORPORATION LIMITED RAILWAY ENGINEERING RESEARCH INSTITUTE; RAILWAY ENGINEERING RESEARCH INSTITUTE OF CHINA ACADEMY OF RAILWAY SCIENCES CORPORATION LIMITED; BEIJING TIEKE SHOUGANG TRACK TECHNOLOGY CO. , LTD;
2019/0309,483 CONCRETE CROSSTIEApr 10, 18Oct 10, 19Gutanna Innovative Concrete and Technologies, LLC
2014/0263,683 COMPOSITE RAILROAD TIES AND METHODS OF PRODUCTION AND USES THEREOFMar 12, 14Sep 18, 14Not available
2012/0286,056 LONGITUDINAL SLEEPER AND DAMPING RAILWAY SYSTEM THEREOFJan 25, 11Nov 15, 12Qingdao Nianxin Environment Tech Co., Ltd.
2005/0120,575 Tool for measuring the diameter of a body with polygonal or circular cross sectionJan 10, 05Jun 09, 05OM MEASURING TOOLS AS