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The ornamental design for a welding helmet, as shown and described.
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Patent | Priority | Assignee | Title |
D972783, | Oct 26 2020 | JIANGSU MEIXIN OPTOELECTRONICS TECHNOLOGY CO , LTD | Welding helmet |
D985851, | May 12 2021 | Welding helmet | |
ER6820, | |||
ER9548, |
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D517744, | Nov 12 2004 | 3M Innovative Properties Company | Side portion of a welding helmet |
D540989, | Aug 31 2005 | OTOS TECH CO , LTD | Welding mask |
D921991, | Jun 21 2019 | OTOS WING.CO., LTD. | Welder's helmet |
D926386, | Jan 19 2020 | JIANGSU MEIXIN OPTOELECTRONICS TECHNOLOGY CO , LTD | Welding helmet |
Executed on | Assignor | Assignee | Conveyance | Frame | Reel | Doc |
Jul 28 2020 | 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 |
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