div class=trans-pagebutton class=gotoPage data-page=1Page 1button div class=trans-imageimg data-url=documentmediadist-carbon-filament-lamp-was-limited-to-the-low-value-of-14-lumens-per-watthtmlpage=1 data-page=1 class=trans-thumb lazyload alt=Page 1: mediadistributordatasolutionscom · carbon filament lamp was limited to the low value of 14 lumens per watt I-PW The efficacy of incandescent lamps was gradually improved through loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAQAAAC1HAwCAAAAC0lEQVR42mM8Uw8AAh0BTZud3BwAAAAASUVORK5CYII= data-src=https:reader033fdocumentsnetreader033viewer20220415045e241e769d0b7260e109d201html5thumbnails1jpg width=140 height=200 divdivdiv class=trans-pagebutton class=gotoPage data-page=2Page 2button div class=trans-imageimg data-url=documentmediadist-carbon-filament-lamp-was-limited-to-the-low-value-of-14-lumens-per-watthtmlpage=2 data-page=2 class=trans-thumb lazyload alt=Page 2: mediadistributordatasolutionscom · carbon filament lamp was limited to the low value of 14 lumens per watt I-PW The efficacy of incandescent lamps was gradually improved through loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAQAAAC1HAwCAAAAC0lEQVR42mM8Uw8AAh0BTZud3BwAAAAASUVORK5CYII= data-src=https:reader033fdocumentsnetreader033viewer20220415045e241e769d0b7260e109d201html5thumbnails2jpg width=140 height=200 divdivdiv class=trans-pagebutton class=gotoPage data-page=3Page 3button div class=trans-imageimg data-url=documentmediadist-carbon-filament-lamp-was-limited-to-the-low-value-of-14-lumens-per-watthtmlpage=3 data-page=3 class=trans-thumb lazyload alt=Page 3: mediadistributordatasolutionscom · carbon filament lamp was limited to the low value of 14 lumens per watt I-PW The efficacy of incandescent lamps was gradually improved through loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAQAAAC1HAwCAAAAC0lEQVR42mM8Uw8AAh0BTZud3BwAAAAASUVORK5CYII=...