Inventor Clark, John T.
Invention Regulation Indicator for Time Pieces
Residence Columbia
Dated 12/24/1889
Patent 417,987
Class 368/170
Assign *
US Patent Office Record http://patft1.uspto.gov/netacgi/nph-Parser?patentnumber=0417987
Local Copy of Patent Docs http://library.clemson.edu/scpatimages/index.php?pn=417987