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  2. Black Codes (United States) - Wikipedia

    en.wikipedia.org/wiki/Black_Codes_(United_States)

    The Black Codes, sometimes called the Black Laws, were laws which governed the conduct of African Americans (both free and freedmen).In 1832, James Kent wrote that "in most of the United States, there is a distinction in respect to political privileges, between free white persons and free colored persons of African blood; and in no part of the country do the latter, in point of fact ...

  3. QR code - Wikipedia

    en.wikipedia.org/wiki/QR_Code

    The QR code system was invented in 1994, at the Denso Wave automotive products company, in Japan. [5] [6] [7] The initial alternating-square design presented by the team of researchers, headed by Masahiro Hara, was influenced by the black counters and the white counters played on a Go board; [8] the pattern of position detection was found and determined by applying the least-used ratio (1:1:3 ...

  4. Laundry symbol - Wikipedia

    en.wikipedia.org/wiki/Laundry_symbol

    By the early 1970s, GINETEX was working with ISO to develop international standards for textile labelling, eventually leading to the ISO 3758 standard, Textiles – Care labelling code using symbols. [ 2 ] [ 3 ] ISO 3758 was supplemented in 1993, revised in 2005 and again in 2012 and 2023 with reviews of the standard held on a five-year cycle.

  5. Label 228 - Wikipedia

    en.wikipedia.org/wiki/Label_228

    2016 version of Label 228. Label 228 is a sticker issued by the United States Postal Service for labeling Priority Mail packages with a mailing address.Label 228 is available free of charge at all USPS Post Office locations or delivered by mail when ordered online.

  6. GHS hazard statements - Wikipedia

    en.wikipedia.org/wiki/GHS_hazard_statements

    Statements which correspond to related hazards are grouped together by code number, so the numbering is not consecutive. The code is used for reference purposes, for example to help with translations, but it is the actual phrase which should appear on labels and safety data sheets. [4]

  7. GS1 - Wikipedia

    en.wikipedia.org/wiki/GS1

    In 1974, the Uniform Code Council (UCC) was founded to administer the standard. [1] On 26 June 1974, a pack of Wrigley's chewing gum became the first ever product with a barcode to be scanned in a shop. [1] [3] In 1976, the original 12-digit code was expanded to 13 digits, which allowed the identification system to be used outside the U.S.

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