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Patents: 298 of 530	UNITED STATES PATENT OFFICE. FRANK C. SOPER, OF CHICAGO, ILLINOIS, ASSIGNOR TO THE LUXFER PRISM PATENTS COMPANY, OF WEST VIRGINIA. DESIGN FOR A PRISM-TILE.	Frank C. Soper 1 of 16 Luxfer: 2 of 88
SPECIFICATION forming part of Design No. 26,865, dated April 6, 1897. Application filed February 9, 1897. Serial No. 622,667. Term of patent 14 years.

To all whom it may concern:     Be it known that I, FRANK C. SOPER, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented a certain new and useful Design for Ornamental Prism-Tiles, of which the following is a description.     My invention relates to a new design for ornamental prism-tiles illustrated in the accompanying drawings, wherein--     Figure 1 is a perspective view of a prism-tile embodying my design. Fig. 2 is a section.     Like letters refer to like parts throughout both figures.     The prism-tile consists of the body portion A, provided with the projecting part B. The

sides C of the projection B are ridged, corrugated, or provided with prisms, as shown, and are preferably inclined with related to each other, the projection B being wider at the lower than at the upper end.     The essential feature of my design is the projecting part B, having the prism-covered sides C, inclined with relation to each other.     I claim--     The design for an ornamental prism-tile comprising a projecting portion with inclined prism-covered sides as shown. FRANK C. SOPER. Witnesses:     DONALD M. CARTER,     FRANCIS W. PARKER.