Journal - Franklin Institute of the State of Pennsylvania (1826)
Franklin Institute, Philadelphia, Franklin Institute (Philadelphia, Pa.) · [Philadelphia : Franklin Institute] · leaf 288
B -^ B. -^ 3 .4 … Pi,ATE XVII.—Bradleys single coil rotary transformer. 1888. Be the question of invention as it may, however, theapparatus was first brought practically and prominently topublic notice by the German firm of Schuckert & Co., ofNuremberg, and also by Lahmeyer, at the Frankfort Exhi- 276 Colles:…
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