Mechanical constant-resistance single prop continuous prop lifting pre-tightening device and method
US-10844717-B2 · Nov 24, 2020 · US
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Chen Yanlong patents
Chen Yanlong is listed as an inventor on 4 patents in our database. Major assignees and classification codes are summarized below.
| Metric | Value |
|---|---|
| Inventor | Chen Yanlong |
| Total patents | 4 |
| First publication | Mar 21, 2019 |
| Latest publication | Nov 24, 2020 |
Notable patents
Publications ranked by popularity score, then publication date.
Mechanical constant-resistance single prop continuous prop lifting pre-tightening device and method
US-2020240269-A1 · Jul 30, 2020 · US
Apparatus and method for pre-loading mechanical constant-resistance single prop
US-10385692-B2 · Aug 20, 2019 · US
Apparatus and method for pre-loading mechanical constant-resistance single prop
US-2019085690-A1 · Mar 21, 2019 · US
Recent patents
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Major assignees
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| Assignee | Patents |
|---|---|
| Univ China Mining | 4 |
Top CPC classifications
Most common classification codes across this inventor's patents.