The length of the dimpled steel pipe is indeterminate and thus its precise length is not claimed, and the dimples are repeated at regular intervals throughout the length of the dimpled steel pipe.
The length of the dimpled steel pipe is indeterminate and thus its precise length is not claimed, and the dimples are repeated at regular intervals throughout the length of the dimpled steel pipe.
Number | Date | Country | Kind |
---|---|---|---|
2011-000189 | Jan 2011 | JP | national |
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