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    • Seyed-Yagoobi, Jamal; Page, Robert H. (United States. Patent and Trademark Office; Texas A&M University. Libraries, 2000-11-07)
      The invention comprises a slot (20) operable to direct a substance through the slot (20), the slot (20) having a maximum inner width (23) and a maximum inner length (22), the ratio of the maximum inner length (22) to the ...