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Scientific American, Vol. 92, No. 23 (June 1905) (1905)

leaf 15

An illustration from Scientific American, Vol. 92, No. 23 (June 1905), 1905, leaf 15
ic sp'irk gap or interrupter, E. L. Ov- plete description, price list and sample sheets. E. C. Schmertz 791,217 ington 790,975 Gold or other diamagnetic metals, separat- Electrical switch thumb piece, F. C. De SIEBER & TRUSSELIj MFG. COMPANY 225N0RTHUNI0NST.Ch-|IG/\GOlLL. ing, L. T. Weiss 791,305… … SPECIAL OFFER TO READERS OF THE "SCIENTIFIC AMERICAN" To any one subscribing before July 1, 1905, the subscription price will be $2.50 for "American Homes and Gardens" for one year from July 1, 1905, to July 1, 1906. To any one subscribing after July 1, 1905, the subscription price, without…

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