====== Patent NX-3856: 1823-09-19, Machine for boring holes in chairs ====== ^ X Number ^ Date ^ Inventor ^ City ^ Title ^ | NX-3856 | 1823-09-19 | David Johnson | Richmond, OH | Machine for boring holes in chairs | ===== Comments ===== NX series patents are X-patents that do not have numbers. They have been arbitrarily assigned NX numbers to allow them to be entered into DATAMP. ===== Information Sources ===== (To be filled in.) ===== External links =====