Philips Announces the World's First LED Replacement for the 75-Watt Bulb
Philips to unveil the world's first LED replacement for the 75-watt light bulb
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Osram presents the first LED "light bulb" made in Germany – OSRAM Group Website
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Sexiest LED lightbulb ever is first true alternative to incandescents | Grist
A Short History of LED Lighting | FM Lighting & Electrical - Calgary
Philips unveils world's first LED replacement for most common household light bulb | LEDs Magazine
50 Years of LED Technology | WIRED
LEDs to light up the world | Feature | Chemistry World
Happy 50th Anniversary LED light-emitting diode! - Electrical Business
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