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2. Sylvania Electric Products - Wikipedia

   en.wikipedia.org/wiki/Sylvania_Electric_Products

   The Sylvania Smithfield plant later became Channel Master. The rights to the Sylvania name in many countries are held by the U.S. subsidiary of the German company Osram. The Sylvania brand name is owned worldwide, apart from Australia, Canada, Mexico, Thailand, New Zealand, Puerto Rico and the USA, by Havells Sylvania, headquartered in London.

3. Fluorescent-lamp formats - Wikipedia

   en.wikipedia.org/wiki/Fluorescent-lamp_formats

   Osram's Fluorescent Miniature (FM) tubes; Sylvania Luxline Slim T2 Linear; T4 1 ⁄ 2: 12.7 G5 bi-pin: Slim lamps. Power ratings and lengths not standardized (and not the same) between different manufacturers T5 T16 5 ⁄ 8: 15.9 G5 bi-pin; 2GX13 quad-pin; G10q quad-pin; Original 4–13 W miniature fluorescent range from 1950s or earlier. [1]

4. Tung-Sol - Wikipedia

   en.wikipedia.org/wiki/Tung-Sol

   Tung-Sols' license was a B license allowing only paying a quota and percentage of production for large or small bulb manufacturing to General Electric without exports of goods. Tung-Sol Lamp Works made miniature lamps under this system with another miniature maker called Chicago Miniature Lamp Company.

5. Havells Sylvania - Wikipedia

   en.wikipedia.org/wiki/Havells_Sylvania

   Sylvania Lighting (formerly Feilo Sylvania [1]), Havells-Sylvania, and SLI (Sylvania Lighting International), is an international designer and manufacturer of lighting products, trading as Sylvania. It has plants throughout Europe, Asia, North Africa and Central and South America, and is one of the few lighting companies that produces both ...

6. Sylvania - Wikipedia

   en.wikipedia.org/wiki/Sylvania

   Sylvania Electric Products, a former major American diversified electrical and electronics manufacturer; Sylvania (brand), its Canadian lighting products division which continues to license to both Havells Sylvania and Osram Sylvania; Osram Sylvania, an American lighting manufacturer owned by Osram AG of Germany

7. Incandescent light bulb - Wikipedia

   en.wikipedia.org/wiki/Incandescent_light_bulb

   A 5% reduction in voltage will double the life of the bulb, but reduce its light output by about 16%. Long-life bulbs take advantage of this trade-off in applications such as traffic signal lamps. Since electric energy they use costs more than the cost of the bulb, general service lamps emphasize efficiency over long operating life.