Inventor Duc, Henry A., Jr.
Invention Attrition Mill
Residence Charleston
Dated 6/10/1890
Patent 429,679
Class *
Assign *
US Patent Office Record http://patft1.uspto.gov/netacgi/nph-Parser?patentnumber=0429679
Local Copy of Patent Docs http://library.clemson.edu/scpatimages/index.php?pn=429679