The broken lines shown in the drawings represent portions of the flip-up auto darkening welding helmet that form no part of the claimed design.
The broken lines shown in the drawings represent portions of the flip-up auto darkening welding helmet that form no part of the claimed design.
| Number | Date | Country | Kind |
|---|---|---|---|
| 2016 3 0505620 | Oct 2016 | CN | national |
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