Illustrated guidelines for determining the age and type of old light bulbs
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References
1.
“History of Electric Light” by SchroederHenry, published by the Smithsonian Institution, August 15, 1923.
2.
LeightonL. G., “A History of the Incandescent Lamp,” a paper prepared internally for the incandescent lamp design Engineering Section of General Electric Co., Nela Park, (File 40-00) December 30, 1958.
3.
StineC. W., “How Old is This Bulb?”, G. E. Large Lamp Dept., Engineer's Bulletin, March, 1968.