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To cite this page on Wikipedia: <ref name="Goss_2022_img_Patent6872876Fig4"> {{cite web |last=Goss |first=Clint |title=Flutopedia Image Detail: Figure 4 of U.S. Patent 6,872,876 B2 |url=http://www.Flutopedia.com/img_Patent6872876Fig4.htm |date=7 June 2022 |website=Flutopedia |access-date=<YOUR RETRIEVAL DATE> }}</ref>
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