| Inventor | Winningham, Henry |
| Invention | Saw sharpening machine |
| Residence | Charlestown |
| Dated | 4/22/1873 |
| Patent | 138137 |
| Class | * |
| Assign | * |
| US Patent Office Record | http://patft1.uspto.gov/netacgi/nph-Parser?patentnumber=0138137 |
| Local Copy of Patent Docs | http://library.clemson.edu/scpatimages/index.php?pn=138137 |