Inventor Duc jr., Henry A.
Invention Improvement in Attrition Mills
Residence Charleston
Dated 4/15/1879
Patent 214,243
Class 241/26
Assign *
US Patent Office Record http://patft1.uspto.gov/netacgi/nph-Parser?patentnumber=0214243
Local Copy of Patent Docs http://library.clemson.edu/scpatimages/index.php?pn=214243