Plastic sheet material
US D189902 S
Abstract available in
Claims available in
Description (OCR text may contain errors)
United States Patent Ofi Des. 189,902
Patented Mar. 14, 1961 PLASTIC SHEET MATERIAL John R. Ellefson, Kennett Square, Pa., assignor to E. I. du Pont de Nemours and Company, Wilmington, Del.,
a corporation of Delaware Filed Oct. 12, 1960, Ser. N0. 62,460
Term of patent 14 years (Cl. D873) Figure 1 is a plan view of a plastic sheet material showing my new design.
Figure 2 is an enlarged portion of the design shown in Figure 1.
The ornamental design for a plastic sheet material, substantially as shown.
References Cited in the file of this patent D. 100,613 D. 108,943 D. 117,548 D. 187,362
UNITED STATES PATENTS Burgess Aug. 4, 1936 Hafner Mar. 22, 1938 Feldman Nov. 7, 1939 Ellefson Mar. 1, 1960