| Inventor | Walker, C. Irvine |
| Invention | Press for Plastic Material for Building Blocks |
| Residence | Charleston |
| Dated | 8/4/1885 |
| Patent | 323,757 |
| Class | 425/218 |
| Assign | Stoney Landing Company, of same place |
| US Patent Office Record | http://patft1.uspto.gov/netacgi/nph-Parser?patentnumber=0323757 |
| Local Copy of Patent Docs | http://library.clemson.edu/scpatimages/index.php?pn=323757 |