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U.S. Patent Office granted patent (No. 1142754) to Glenn H. Curtiss covering the arrangement of a step or ridge incorporated in the hull of flying boats.

Date:	08-Jun-1915	Entity:	Country:	United States

Area:	Science & Tech	Leader:	State:

Class:	Unclassified	Resource:	City:

	U.S. Patent Office granted patent (No. 1142754) to Glenn H. Curtiss covering the arrangement of a step or ridge incorporated in the hull of flying boats.