Inventor Wright, Robert Maxwell
Invention Sash Balance
Residence Anderson
Dated 5/27/1890
Patent 428,643
Class *
Assign *
US Patent Office Record http://patft1.uspto.gov/netacgi/nph-Parser?patentnumber=0428643
Local Copy of Patent Docs http://library.clemson.edu/scpatimages/index.php?pn=428643