Improved Mazda Light Bulb
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“Improved Mazda lamp for lighting large areas-- the most efficient lamp ever made.” -Bodmer, 1917
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LampsSource
Rudolph J. Bodmer, ed. The Book of Wonders (Washington, DC: Bureau of Industrial Education, Inc., 1917)
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1264×2400, 243.5 KiB
539×1024, 38.2 KiB
337×640, 20.1 KiB
168×320, 8.0 KiB