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John Meiggs Ewen
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Individual
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Individual
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Publication of GB189716563ApublicationCriticalpatent/GB189716563A/en
16,563. Ewen, J. M. July 13. Windows.-Vertical grooves C are formed in the outer surfaces of the glass plates, and horizontal prisms B are formed on the inner surfaces. The oblique rays of light are refracted and reflected in a more or less perpendicular direction through the plates, and thus utilized
GB189716563D1897-07-131897-07-13Window Prism Lights having Vertical Grooves on the Receiving Sides.
ExpiredGB189716563A
(en)