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COMPUTER FORERUNNER INVENTOR,CYRUS SPALDING,ADDING MACHINE, CIVIL WAR ERA COVER
COMPUTER FORERUNNER INVENTOR,CYRUS SPALDING,ADDING MACHINE, CIVIL WAR ERA COVER

COMPUTER FORERUNNER INVENTOR,CYRUS SPALDING,ADDING MACHINE, CIVIL WAR ERA COVER

$ 66

Availability: 100 in stock
  • Refund will be given as: Money Back
  • Item must be returned within: 14 Days
  • All returns accepted: Returns Accepted
  • Organization: Inventors & Geniuses
  • Country/Region of Manufacture: United States
  • Return shipping will be paid by: Buyer
  • Restocking Fee: No
  • Year: 1861-65

    Description

    Rare Cover to Spaulding.
    There is no letter with this Cover/Envelope.
    add .50 for 1st class/Insured to U.S....
    Spalding Adding Machine
    Cyrus G. Spalding of Boston, Massachusetts, was a holder of two US patents for
    adding machines
    : №146407 from January, 13th, 1874 and №293809 from February 19th, 1884.
    The second patent of Spalding (see the lower patent drawing) is for a device (an improved version of the first patent’s device), which had an additional wheel for hundreds.
    January 13, 1874
    The US Patent Office Issues a Patent for the Spalding Adding Machine
    The US Patent Office issues a patent for the Spalding Adding Machine. The precursor of calculators and computers, mechanical adding machines could do simple arithmetic and were popular in businesses until supplanted
    (One of these is being offered for sale by someone for 00)