Inventor Mason, Charles T.
Invention Improvement in Electro-magnetic Engines
Residence Sumter Court House
Dated 3/11/1879
Patent 213,220
Class 310/115
Assign *
US Patent Office Record http://patft1.uspto.gov/netacgi/nph-Parser?patentnumber=0213220
Local Copy of Patent Docs http://library.clemson.edu/scpatimages/index.php?pn=213220