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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.
A combination of pen spinning tricks. Pen spinning is a form of object manipulation that involves the deft manipulation of a writing instrument with hands. Although it is often considered a form of self-entertainment (usually in a school or office setting), multinational competitions and meetings are sometimes held. [1]
Andrey Nartov (1683–1756), Russia – first lathe with a mechanic cutting tool-supporting carriage and a set of gears, fast-fire battery on a rotating disc, screw mechanism for changing the artillery fire angle, gauge–boring lathe for cannon-making, early telescopic sight; James Nasmyth (1808–1890), Scotland – steam hammer
PenPoint OS ran on a number of Intel x86-powered tablet PCs including IBM's ThinkPad 700T series, NCR's 3125, 3130 and some of GRiD Systems' pen-based portables; it was later ported to the Hobbit chip in AT&T Corporation's EO Personal Communicator. [1]
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A filing cabinet is a piece of office furniture used to store paper documents in file folders. It is an enclosure for drawers in which items are stored. On November 2, 1886, Henry Brown patented his invention of a "receptacle for storing and preserving papers".
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