http://www.zensewing.com/Projects/2002_05_Mending/Sewing%20Web%20-%20How%20To%20-%20Mending%20Jeans%20with%20a%20Patch.h...
- cached
- mail it
- history
I think he's got it right: french seams stitched down, making three lines of stitching per seam. This agrees with descriptions I've heard of "french seams" and "stitched three times with no raw edges showing".