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| Number | Title | Issue Date |
| 5736917 | Electromagnetic coil and manufacturing apparatus for the same A traverse shaft section 609 shifts in response to the rotation of a bobbin rotating section 604 with a predetermined winding pitch P1 equivalent to two to 10 times the diameter of a wire rod 520. With this shift movement of traverse shift section 609, wi... | 04/07/1998 |
