What is the history of Philips light bulbs?

Philips has spanned three full centuries. The history of this world-renowned company can be traced back to 1891, when a Dutch mechanical engineer began producing carbon filament light sources in a former buckskin factory in Eindhoven, the Netherlands. Among his earliest major customers were some of the early power companies who included the provision of light sources in their own energy supply contracts. These companies set high standards for the quality of their products, so that the young Philips started with strict quality control. 1908 was Philips' first year on the world market, when it started to produce tungsten metal filament bulbs. 1913 saw the introduction of the tungsten filament inflatable "half-watt" lamp, and 1915 saw the smaller "Arga" lamp, with its "half-watt" lamp, and the "Arga" lamp. In 1913 the tungsten filament gas-filled "half-watt" lamp was introduced, followed in 1915 by the smaller "Arga" lamp, for which Philips' slogan was "We have a lamp for every application". In 1914, the company established a research laboratory to study physical and chemical phenomena in order to promote product innovation. This can be called a sign of its product innovation, because immediately after the next year, Philips grew its own strength, the business expanded to a variety of products such as automotive lamps, searchlights, theater lighting and so on. To the First World War before, Philips has entered the United States, the French market, and in 1919 into the Belgian market, to the twenties has become one of Europe's most influential producers of carbon filament lamps. From this era, Philips began to protect its inventions with patents, and absorbed X-ray radiation and radio as the company's new field of struggle, which marked the beginning of the diversification of Philips' products. 1918, Philips produced its first medical X-ray tube. 1925, Philips stepped into the initial attempts to develop television. 1927, Philips began to produce radios, and only a year later, Philips not only made the radio, but also made it possible for the company to develop its own radio. In 1927, Philips began production of radios, and just one year later, Philips not only made the production of radios reached 100 million units, but also began production of medical X-ray equipment in the United States, thus entering the field of medical equipment.