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John Harrington
Invented the modern day water closet
Alexander Cummings
-Reinvented Harrington’s water closet
-Invented S-Trap, Trap, and Sliding Bowl
Samuel Prossen
-Patented the Plunger Closet
-Invented a toilet with a valve at the bottom
Thomas Twyford
Invented the trapless toilet in one piece.(mechanism is considered as pioneer in Sanitary Science.)
J.G Jennings
-Patented the washout water closet
Washout Water Closet
Shallow pan with a dish trap and water seal.
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