Convention, Volume 1;Volume 32,Bagian 1 |
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Halaman 157
... lamps on a free renewal basis are extending that policy to the metallized- filament lamps . In the matter of delivering lamp renewals , about half of the companies require the customers to send for all lamps ; about 10 per cent deliver ...
... lamps on a free renewal basis are extending that policy to the metallized- filament lamps . In the matter of delivering lamp renewals , about half of the companies require the customers to send for all lamps ; about 10 per cent deliver ...
Halaman 162
... lamps . In what I shall say , I shall treat them rather in two groups -foreign and domestic . There is one very important principle that distinguishes the foreign from the American lamps . Most of the foreign lamps are rated in hefners ...
... lamps . In what I shall say , I shall treat them rather in two groups -foreign and domestic . There is one very important principle that distinguishes the foreign from the American lamps . Most of the foreign lamps are rated in hefners ...
Halaman 175
... lamps in quantity with any degree of accuracy requires an expensive equipment and skilled observers . Such a combination is beyond the reach of most buyers . In the lamp works the utmost pre- cautions are taken . A storage battery plant ...
... lamps in quantity with any degree of accuracy requires an expensive equipment and skilled observers . Such a combination is beyond the reach of most buyers . In the lamp works the utmost pre- cautions are taken . A storage battery plant ...
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