Re: when was the f15t8/cw type labeling started? « Reply #1 on: September 22, 2015, 05:03:14 PM » Author: Powell
i have some early GE lamps that say Standard Cool White or Standard Warm White as the Deluxe versions had just come out. I guess around 1950
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NNNN!

	Re: when was the f15t8/cw type labeling started? « Reply #2 on: October 13, 2015, 04:13:02 AM » Author: Silverliner
Most manufacturers began including the ordering code on fluorescent lamps in 1959. Westinghouse started earlier, around 1956-57. These ordering codes were listed in the lamp catalogs starting in the 1940s though.
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