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  2. Coded postal obliterators - Wikipedia

    en.wikipedia.org/wiki/Coded_postal_obliterators

    After the founding of the rural postal service (1909), the rural postmen were initially equipped with diamond undated obliterators with the number of the service. These were later replaced with dated postmarks with the number of the service and a small postal horn at the bottom. [12] The original coded obliterations were used until at least 1939.

  3. Optional information line - Wikipedia

    en.wikipedia.org/wiki/Optional_information_line

    Examples of bulk mail that have information lines include First-Class Mail, periodicals, USPS Marketing Mail, and bound printed matter. [2] Possible optional information lines include the optional endorsement line (OEL), an address change service (ACS) participant code, carrier route information, and a mailer's keyline. [1]

  4. Intelligent Mail barcode - Wikipedia

    en.wikipedia.org/wiki/Intelligent_Mail_barcode

    An Intelligent Mail barcode has also been referred to as a One Code Solution and a 4-State Customer Barcode, abbreviated 4CB, 4-CB or USPS4CB. The complete specification can be found in USPS Document USPS-B-3200. [2] It effectively incorporates the routing ZIP Code and tracking information included in previously used postal barcode standards.

  5. POSTNET - Wikipedia

    en.wikipedia.org/wiki/POSTNET

    POSTNET (Postal Numeric Encoding Technique) is a barcode symbology used by the United States Postal Service to assist in directing mail. The ZIP Code or ZIP+4 code is encoded in half- and full-height bars. [1] Most often, the delivery point is added, usually being the last two digits of the address or PO box number.

  6. United States Postal Service - Wikipedia

    en.wikipedia.org/wiki/United_States_Postal_Service

    The full eagle logo, used in various versions from 1970 to 1993. The United States Postal Service (USPS), also known as the Post Office, U.S. Mail, or simply the Postal Service, is an independent agency of the executive branch of the United States federal government responsible for providing postal service in the United States, its insular areas and associated states.

  7. Mail sorting - Wikipedia

    en.wikipedia.org/wiki/Mail_sorting

    In 1965, the postal service put the first high-speed optical character reader into operation that could handle a preliminary sort automatically [citation needed]. The first computer-driven single-line optical character reader—which reads the mailpiece destination address then prints a barcode on the envelope that could be used to automate ...

  8. United States Postal Service irradiated mail - Wikipedia

    en.wikipedia.org/wiki/United_States_Postal...

    Irradiation's effects on paper caused some alarm in the philatelic world, which sends large numbers of rare postage stamps and covers through the mail. A number of auction houses stopped sending material through the mail, and Linn's Stamp News in 2002 featured reports on stamps and covers that had been ruined by irradiation. [3]

  9. Mail - Wikipedia

    en.wikipedia.org/wiki/Mail

    The service provided by the U.S. Postal Service in 2003 allows the franks to be printed out on special adhesive-backed labels. In 2004 the Royal Mail in the United Kingdom introduced its SmartStamp Internet-based system, allowing printing on ordinary adhesive labels or envelopes. Similar systems are being considered by postal administrations ...