Ratfactor's Illustrated Guide to Folding Fitted Sheets
If you search the Web for the history of fitted sheets, you’re going to find a reference to exactly two patents: 1959 - Bertha Berman of New York: FITTED BED SHEET CONSTRUCTION (PDF, 355Kb) 1992 - Gisele Jubinville of Alberta: MATTRESS COVER/FITTED BED SHEET (PDF, 492Kb) Now, if you actually look at the patents, what you’ll see is that Berman’s was a more complex design that consisted of multiple pieces (but does feature elastic!) And Jubinville’s design, indeed, has the stitched-in elastic d