Inventor Gilchrist, Peter S.
Invention Apparatus for Making Sulphuric Acid
Residence Baltimore, MD
Dated 8/22/1893
Patent 503,847
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US Patent Office Record http://patft1.uspto.gov/netacgi/nph-Parser?patentnumber=0503847
Local Copy of Patent Docs http://library.clemson.edu/scpatimages/index.php?pn=503847