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Drawings from US Patent 1,329,559, Valvular Conduit (patented February 3, 1920): a one-way fluid conduit that uses internal cones and baffles to resist reverse flow. | |||
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Source: https://patents.google.com/patent/US1329559A | |||
Author: Nikola Tesla | |||
License: Public domain (patent published 1920) | |||