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  1. PEN - Penumbra, Inc.

    Yahoo Finance

    188.01-3.33 (-1.74%)

    at Thu, May 30, 2024, 4:00PM EDT - U.S. markets closed

    After Hours 187.97 -0.04 (-0.02%)

    Delayed Quote

    • Open 190.18
    • High 192.07
    • Low 185.13
    • Prev. Close 191.34
    • 52 Wk. High 348.67
    • 52 Wk. Low 180.93
    • P/E 79.33
    • Mkt. Cap 7.29B
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  3. Laser pointer - Wikipedia

    en.wikipedia.org/wiki/Laser_pointer

    A laser pointer or laser pen is a (typically battery-powered) handheld device that uses a laser diode to emit a narrow low-power visible laser beam (i.e. coherent light) to highlight something of interest with a small bright colored spot.

  4. List of Walmart brands - Wikipedia

    en.wikipedia.org/wiki/List_of_Walmart_brands

    Pen+Gear. Pen+Gear is Walmart's store brand for school and office supplies. From notebooks, pens, markers, paper, binders, pencils and even paper shredders. Pen+Gear replaced the brand name Casemate in late 2016. Additional brands Homelines

  5. Laser safety - Wikipedia

    en.wikipedia.org/wiki/Laser_safety

    In the period from 1999 to 2016, increasing attention has been paid to the risks posed by so-called laser pointers and laser pens. Typically, the sale of laser pointers is restricted to either class 3A (<5 mW) or class 2 (<1 mW), depending on local regulations.

  6. Laser cutting - Wikipedia

    en.wikipedia.org/wiki/Laser_cutting

    Laser cutting works by directing the output of a high-power laser most commonly through optics. The laser optics and CNC (computer numerical control) are used to direct the laser beam to the material.

  7. Laser engraving - Wikipedia

    en.wikipedia.org/wiki/Laser_engraving

    Laser engraving is the practice of using lasers to engrave an object. Laser marking, on the other hand, is a broader category of methods to leave marks on an object, which in some cases, also includes color change due to chemical/molecular alteration, charring, foaming, melting, ablation, and more.

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  9. Dental instrument - Wikipedia

    en.wikipedia.org/wiki/Dental_instrument

    Dental laser. A dental laser is a type of laser designed specifically for use in oral surgery or dentistry. The use of a laser can decrease morbidity after surgery, and reduces the need for anesthetics.

  10. List of pen types, brands and companies - Wikipedia

    en.wikipedia.org/wiki/List_of_pen_types,_brands...

    A pen is a handheld device used to apply ink to a surface, usually paper, for writing or drawing. Additional types of specialized pens are used in specific types of applications and environments such as in artwork , electronics , digital scanning and spaceflight , and computing.

  11. Zebra (pen manufacturer) - Wikipedia

    en.wikipedia.org/wiki/Zebra_(pen_manufacturer)

    Zebra Co., Ltd. (ゼブラ株式会社, Zebura Kabushiki gaisha) is a Japanese manufacturer of writing instruments, established in 1914 by Tokumatsu Ishikawa. [1] The company sells a wide range of writing implements through retail stores, wholesalers and mail order.

  12. Waterman Pen Company - Wikipedia

    en.wikipedia.org/wiki/Waterman_Pen_Company

    The Waterman Pen Company is a major manufacturing company of luxury fountain pens and inks, based in Paris, France. The firm was established in 1884 in New York City by Lewis Waterman, being one of the few remaining first-generation fountain pen companies, as "Waterman S.A."