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NANJING KANGNI NEW TECHNOLOGY OF MECHANTRONIC CO., LTD.
| NANJING KANGNI NEW TECHNOLOGY OF MECHANTRONIC CO., LTD. Patent applications | ||
| Patent application number | Title | Published |
|---|---|---|
| 20100319259 | POWERLESS HELICAL LOCKING MECHANISM FOR DOOR - A powerless helical locking mechanism for door includes a screw ( | 12-23-2010 |