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Image: Patent Model - Improvement in Propulsion of Vessels

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Description: Patent model consists in the combination of a siphon-formed tube with a propeller-wheel, for the purpose of gaining an increase of power for the propelling of boats and the operating of machinery Patent number 184,997
Title: Patent Model - Improvement in Propulsion of Vessels
Credit: Own work
Author: FairyShrimp
Usage Terms: Creative Commons Attribution-Share Alike 4.0
License: CC BY-SA 4.0
License Link: https://creativecommons.org/licenses/by-sa/4.0
Attribution Required?: Yes

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