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Scientific American, Vol. 87, No. 24 (December 1902) (1902)

leaf 46

An illustration from Scientific American, Vol. 87, No. 24 (December 1902), 1902, leaf 46
table table, for flat surface Hallway system, etc, electric, W. Robinson. 714,740 tirlndinf; and flnisnlriK, and for ordi- The Book-Keeper Publishing Co., Ltd. Hallway track appliance, H. T. Porter 714,820 nary tool grinding. Hallway trains, system for computing the re 54 BOOK-KEEPER BLDG.,… … Too Much Light Signaling, apparatus for selective electric, J. S. Stone 714.8:11,714,834 Is the great trouble with electric globes. You Signaling by electromagnetic waves, selec- often endure a big, bright glare when you want tive, R. A. Fessenden 715,203 a subdued glow, a common electric lamp…

Feet · Engine · Locomotive · Air · Scientific American · Motor · Driving wheels · York city · Horse power · American december · Continuous current · Inches diameter · Air brake · Compressed air · Sewing machine

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