Lighting of the food industries / Information compiled by W.H. Rademacher. (1922)
General Electric Company. Edison Lamp Works · General Electric Company: Edison Lamp Works · leaf 21
ys being the average time of sat-isfactory performance. Although special lamps having specialtreatment in such matters as glass, basing cement, solder, exhaust. - -* ^ •F . en developed for use in such locations their life per-formance is not sufficiently better than that of regular lampsto warrant… … t r M i v •* V o*- **! pwi 4 o- half f
Electric lighting · Industrial lighting · Interior lighting fixtures, lamps, and ballasts · Special purpose lighting
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