The broken lines in the figures are shown for the purpose of illustrating boundaries of the ladder and form no part of the claimed design.
The broken lines in the figures are shown for the purpose of illustrating boundaries of the ladder and form no part of the claimed design.
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Number | Date | Country | |
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Parent | 29667352 | Oct 2018 | US |
Child | 29813906 | US |
Number | Date | Country | |
---|---|---|---|
Parent | 29813906 | Nov 2021 | US |
Child | 29840569 | US |