New York City record and building trades directory (1892)
New York City Record Pub. Co · Park Row, N.Y. : New York City Record Pub. Co. · leaf 700
» i EHRIPHONE, FRED. SCHLUCHTNER, PATENTEE AND INVENTOR. 2661 ATLANTIC AVENUE, BROOKLYN, N, Y„ U.S.A. TELEPHONE … CALL. 55 EAST NEW YORK. The accompanyingillustrations representthe practical working ofan extremely simple Im-provement in speakingtubes, the mouth piecebeing provided with anattached ear piece,« hereby messages maybe more conveniently re-ceived and transmitted.This improvement hasbeen patented by…
Building · Building laws
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