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A pencil case can also contain a variety of other stationery such as sharpeners, pens, glue sticks, erasers, scissors, and rulers. Pencil cases can be made from a variety of materials such as wood or metal. Some pencil cases have a hard and rigid shell encasing the pens inside, while others use a softer material such as plastic, leather or cotton.
Muji entered the US market in 2002; its products were stocked at MOMA, New York. [14] Muji opened its first American store on November 16, 2007, in SoHo, Manhattan. [23] In 2008, it opened two more stores in Manhattan: one in Times Square, [24] and one in Chelsea. [25]
An array of World War 2 pencil detonators displayed at the Museum of the British Resistance Organisation at the Parham Airfield Museum, 2007. A pencil detonator or time pencil is a time fuze designed to be connected to a detonator or short length of safety fuse. They are about the same size and shape as a pencil, hence the name.
An eraser (also known as a rubber in some Commonwealth countries, including South Africa [1] [2] [3] from which the material first used got its name) is an article of stationery that is used for removing marks from paper or skin (e.g. parchment or vellum). Erasers have a rubbery consistency and come in a variety of shapes, sizes, and colors.
Attached eraser on the left; Pencil lead on the right. On 30 March 1858, Hymen Lipman received the first patent for attaching an eraser to the end of a pencil. [35] In 1862, Lipman sold his patent to Joseph Reckendorfer for $100,000, who went on to sue pencil manufacturer Faber-Castell for infringement. [36] In Reckendorfer v.
Nataraj pencil metal container in the 1990's. Hindustan Pencils Pvt. Ltd. is an Indian manufacturer of pencils, writing materials and other stationery items, established in 1958 [1] in Bombay (present-day Mumbai). The company makes writing implements under the brands Nataraj and Apsara, and claims to be the largest pencil manufacturer in India. [2]
In 1862, Lipman sold his lead-pencil and eraser patent for $100,000 to Joseph Reckendorfer, who went to sue the pencil manufacturer Faber for infringement. [2] In 1875, the Supreme Court of the United States ruled against Reckendorfer, declaring the patent invalid because his invention was actually a combination of two already known things with ...
Many refinements and extensions of Kim et al. delayed-choice quantum eraser have been performed or proposed. Only a small sampling of reports and proposals are given here: Scarcelli et al. (2007) reported on a delayed-choice quantum-eraser experiment based on a two-photon imaging scheme. After detecting a photon passed through a double-slit, a ...
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