(under subclass 249) Process wherein the work parts are generally sheet-like and are secured to each other at their margins such that their meeting faces overlap.
(1) Note. This subclass includes securing the edges of work if there is only slight overlap (e.g., as occurs when the edges of adjacent plates or sheets are bevelled in the same direction), just so a portion of one sheet when considered in cross-section extends beyond a portion of the other sheet.
