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  2. Trodat - Wikipedia

    en.wikipedia.org/wiki/Trodat

    It specialises in self-inking stamps with a built-in stamp pad. The Trodat Printy stamp, which was introduced to the market in 1976, has sold over 300 million, according to the manufacturer's data. Trotec, founded in 1997, provides laser systems, and offers engraving , marking, and cutting services.

  3. Rubber stamp - Wikipedia

    en.wikipedia.org/wiki/Rubber_stamp

    A rubber stamp, and the message stamped by it Ink pad from second half of the 20th century, in the Museo del Objeto del Objeto collection. A rubber stamp is an image or pattern that has been carved, molded, laser engraved, or vulcanized onto a sheet of rubber.

  4. William B. Purvis - Wikipedia

    en.wikipedia.org/wiki/William_B._Purvis

    William B. Purvis (12 August 1838 – 10 August 1914) [1] was an African-American inventor and businessman who received multiple patents in the late 19th-century. His inventions included improvements on paper bags, an updated fountain pen design, improvement to the hand stamp, and a close-conduit electric railway system.

  5. List of Machin stamps - Wikipedia

    en.wikipedia.org/wiki/List_of_Machin_stamps

    All barcoded stamps are self-adhesive. Existing definitive stamps issued from 15 February 1971 to 31 January 2022 remain valid until 31 January 2023: since 31 March 2022, they can be indefinitely exchanged for the barcoded series. [18] The 2022 issue was the last release in the Machin series prior to the death of Elizabeth II.

  6. Postage meter - Wikipedia

    en.wikipedia.org/wiki/Postage_meter

    An early machine pictured on a 1932 envelope from Brazil addressed to Pitney Bowes. Since the issuance of adhesive stamps in 1840, postal officials have been concerned about security against stamp theft and how to process mail in a timely fashion. [1] One solution was a postage stamp affixing machine, introduced in the 1880s. [2] [3]

  7. List of stamp clubs and philatelic societies in the United ...

    en.wikipedia.org/wiki/List_of_stamp_clubs_and...

    By the middle of the twentieth century, hundreds of stamp clubs had formed throughout the United States, often affiliated with large organizations, such as the American Philatelic Society or the American Topical Association. Many published their own scholarly articles or journals, while others advertised in the journals of larger philatelic ...