Inventor Shepard, Charles Upham
Invention Fertilizers, Preparing ammoniated sulphuric acid for the manufacture of
Residence Charleston
Dated 3/1/1870
Patent 100457
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US Patent Office Record http://patft1.uspto.gov/netacgi/nph-Parser?patentnumber=0100457
Local Copy of Patent Docs http://library.clemson.edu/scpatimages/index.php?pn=100457