The broken lines shown in the drawings illustrate portions of the communication device for hard plastic masks that form no part of the claimed design.
The broken lines shown in the drawings illustrate portions of the communication device for hard plastic masks that form no part of the claimed design.
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Number | Date | Country | |
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Parent | 15961509 | Apr 2018 | US |
Child | 16161914 | US |
Number | Date | Country | |
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Parent | 16161914 | Oct 2018 | US |
Child | 29704560 | US |