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  2. Envelope - Wikipedia

    en.wikipedia.org/wiki/Envelope

    The No. 10 envelope is the standard business envelope size in the United States. [6] PWG 5101.1 [7] also lists the following even inch sizes for envelopes: 6 × 9, 7 × 9, 9 × 11, 9 × 12, 10 × 13, 10 × 14 and 10 × 15. Envelopes accepted by the U.S. Postal Service for mailing at the price of a letter must be: Rectangular

  3. Windowed envelope - Wikipedia

    en.wikipedia.org/wiki/Windowed_envelope

    Windowed envelope. US Patent 701,839 for a windowed envelope. Modern envelope with a single window for the recipient address. A windowed envelope is a conventional envelope with a transparent (typically PET or BOPS Bi-oriented polystyrene [1] plastic film) window to allow the recipient's address to be printed on the paper contained within.

  4. Philip B. Downing - Wikipedia

    en.wikipedia.org/wiki/Philip_B._Downing

    77. Known for. Patented a street letter box, and operating street railway switches. Philip B. Downing (1857-1934) was an African American inventor from Providence, Rhode Island. He is known for his most significant invention, the operating street railway switch. This allowed the switches to be opened or closed by using a brass arm located next ...

  5. Edwin Hill (engineer) - Wikipedia

    en.wikipedia.org/wiki/Edwin_Hill_(engineer)

    Occupation (s) Inventor, Controller of Stamps. Known for. Inventing first letter scale and a machine to fold envelopes. Edwin Hill (25 November 1793 - 6 November 1876) [1] was a Victorian postal official, the older brother of Rowland Hill, who invented a mechanical system to make envelopes and who campaigned for legal and political change.

  6. Stamped envelope - Wikipedia

    en.wikipedia.org/wiki/Stamped_envelope

    Stamped envelope. A 2 centavos stamped envelope with embossed Columbus indicium and 3c adhesive postage stamp from Cuba to Norway ca. 1904. A stamped envelope or postal stationery envelope ( PSE) is an envelope with a printed or embossed indicium indicating the prepayment of postage. It is a form of postal stationery .

  7. James Chalmers (inventor) - Wikipedia

    en.wikipedia.org/wiki/James_Chalmers_(inventor)

    Dundee, Scotland. Burial place. 526 Dundee Howff. Nationality. Scottish. Occupation. Inventor. James Chalmers (2 February 1782 – 26 August 1853) was a Scottish inventor (buried on 1 September 1853) who it was claimed, by his son, was the inventor of the adhesive postage stamps. [ a]

  8. Mulready stationery - Wikipedia

    en.wikipedia.org/wiki/Mulready_stationery

    The one penny Mulready stationery. issued in 1840, hand coloured. Mulready stationery describes the postal stationery letter sheets and envelopes that were introduced as part of the British Post Office postal reforms of 1840. They went on sale on 1 May 1840, and were valid for use from 6 May. The Mulready name arises from the fact that William ...

  9. Postage stamp - Wikipedia

    en.wikipedia.org/wiki/Postage_stamp

    3. Denomination. 4. Country name. A postage stamp is a small piece of paper issued by a post office, postal administration, or other authorized vendors to customers who pay postage (the cost involved in moving, insuring, or registering mail). Then the stamp is affixed to the face or address-side of any item of mail —an envelope or other ...