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The ornamental design for a welding helmet, as shown and described.
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Patent | Priority | Assignee | Title |
Patent | Priority | Assignee | Title |
6614409, | Nov 23 1999 | OTOS TECH CO , LTD | Glare shielding device of welding helmet and method of controlling the same |
D955056, | Jul 01 2020 | JIANGSU MEIXIN OPTOELECTRONICS TECHNOLOGY CO , LTD | Welding helmet |
D955655, | May 12 2020 | JIANGSU MEIXIN OPTOELECTRONICS TECHNOLOGY CO , LTD | Welding helmet |
D955656, | May 12 2020 | JIANGSU MEIXIN OPTOELECTRONICS TECHNOLOGY CO , LTD | Welding helmet |
Executed on | Assignor | Assignee | Conveyance | Frame | Reel | Doc |
Jan 15 2021 | Jiangsu Meixin Optoelectronics Technology Co., Ltd. | (assignment on the face of the patent) | ||||
Jun 10 2021 | JIA, WEIDONG | JIANGSU MEIXIN OPTOELECTRONICS TECHNOLOGY CO , LTD | ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS | 056493 | 0124 | |
Oct 13 2022 | JIA, WEIDONG | JIANGSU MEIXIN OPTOELECTRONICS TECHNOLOGY CO , LTD | ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS | 061403 | 0491 |
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