Editing Universal Product Code (section)

== Further reading ==
*{{cite patent
 |inventor-last= Bilgutay
 |inventor-first= Ilhan M.
 |country-code= US
 |patent-number= 3832686
 |publication-date= 11 May 1972
|issue-date= 27 August 1974
 |title= Bar Code Font
 |description= |ref=none }}
*{{cite patent
 |inventor-last= Brainerd
 |inventor-first= H. B.
 |country-code= US
 |patent-number= 3145291
 |publication-date= 2 July 1959
|issue-date= 18 April 1964
 |title= Identification System
 |description= |ref=none }} Railroad bar code.
*{{cite patent
 |inventor-last= Shields
 |inventor-first= Charles B.
 |inventor2-last= Stapelfeldt
 |inventor2-first= Roelif
 |country-code= US
 |patent-number= 3617707
 |publication-date= 17 August 1967
|issue-date= 2 November 1971
 |title= Automatic car identification system
 |description= |ref=none }}
*{{cite patent
 |inventor-last= Crouse
 |inventor-first= William G.
 |inventor2-last= Jones
 |inventor2-first= John E.
 |country-code= US
 |patent-number= 3723710
 |publication-date= 28 June 1971
|issue-date= 27 March 1973
 |title= Method and Device for Reading and Decoding a High Density Self-Clocking Bar Code
 |description= |ref=none }}