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  2. Wahl Clipper - Wikipedia

    en.wikipedia.org/wiki/Wahl_Clipper

    Wahl Clipper Corporation was founded due to Leo J. Wahl's patent for an electromagnetic hair clipper in 1919. [3] On February 2, 1921, he purchased a majority of the stock of his uncle's manufacturing company which made the clipper, and incorporated the business as Wahl Clipper Corporation. [4] In 1924, Leo Wahl patented a vibrating motor hair ...

  3. Hair clipper - Wikipedia

    en.wikipedia.org/wiki/Hair_clipper

    Leo continued to work on his inventions and by 1921, he patented his final design of an invention more than a decade in the making- the first electric hair clipper. Within a year, Wahl Manufacturing had manufactured and sold thousands of clippers all over the United States and in 1921 Leo renamed the company the Wahl Clipper Corporation.

  4. Allison Model 250 - Wikipedia

    en.wikipedia.org/wiki/Allison_Model_250

    Data from The Instrumentation Design And Control of a T63-A-700 Gas Turbine Engine General characteristics Type: Turboshaft Length: 40.5 in (1,029 mm) Diameter: 22.5 in (572 mm) Dry weight: 138.5 lb (63 kg) dry Components Compressor: 6-stage axial + 1-stage centrifugal compressors Combustors: Single can combustion chamber Turbine: 2-stage axial gas generator power turbine + 2-stage axial free ...

  5. Kawasaki Ninja 250R - Wikipedia

    en.wikipedia.org/wiki/Kawasaki_Ninja_250R

    In the United States, previous models (EX250-E/F/G/H) were already being marketed as members of the Ninja family of sport bikes, while outside of the U.S. the bike was known variously as the ZZR-250, ZX-250, or as the GPX-250R. One of the earliest models, the EX250-C, was given the name GPz-250 (the lower case z representing the air-cooled ...