CN204417926U - 再生双块式混凝土枕木 - Google Patents
再生双块式混凝土枕木 Download PDFInfo
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CN201420821150.4U CN204417926U (zh) | 2014-12-23 | 2014-12-23 | 再生双块式混凝土枕木 |
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109457550A (zh) * | 2018-12-18 | 2019-03-12 | 中铁第四勘察设计院集团有限公司 | 一种轨枕块与道床之间的凹槽型连接加强结构及施工方法 |
WO2021012640A1 (zh) * | 2019-07-24 | 2021-01-28 | 中铁第四勘察设计院集团有限公司 | 无砟轨道的钢管混凝土构件与轨枕块的防脱离设计 |
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109457550A (zh) * | 2018-12-18 | 2019-03-12 | 中铁第四勘察设计院集团有限公司 | 一种轨枕块与道床之间的凹槽型连接加强结构及施工方法 |
WO2021012640A1 (zh) * | 2019-07-24 | 2021-01-28 | 中铁第四勘察设计院集团有限公司 | 无砟轨道的钢管混凝土构件与轨枕块的防脱离设计 |
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Legal Events
Date | Code | Title | Description |
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C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
DD01 | Delivery of document by public notice |
Addressee: Beijing Feng Yongyuan Trading Co. Ltd. Document name: Notification that Application Deemed not to be Proposed |
|
EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Beijing Feng Yongyuan Trading Co. Ltd. Assignor: Yue Yan Contract record no.: 2015990000700 Denomination of utility model: Recycled double-block type concrete sleeper Granted publication date: 20150624 License type: Exclusive License Record date: 20150729 |
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LICC | Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model | ||
C41 | Transfer of patent application or patent right or utility model | ||
TR01 | Transfer of patent right |
Effective date of registration: 20160629 Address after: 100041, No. 3, building 30, 2 Xing Xing street, Beijing, Shijingshan District, C-0017 Patentee after: BEIJING DINGCHUANG NEW BUILDING MATERIALS CO., LTD. Address before: 644100, No. 53, Shun Shun Street, Daguan Town, Nanxi County, Yibin, Sichuan Patentee before: Yue Yan |