Inventor Northrop, William B.
Invention Type Cleaning Attachment for Writing Machines
Residence Charleston
Dated 4/8/1890
Patent 425,387
Class *
Assign *
US Patent Office Record http://patft1.uspto.gov/netacgi/nph-Parser?patentnumber=0425387
Local Copy of Patent Docs http://library.clemson.edu/scpatimages/index.php?pn=425387