Scientific American Volume 59 Number 23 (December 1888) . thepreparation of Patent Drawings, Speciflcationa, and theprosecution of Application-j for Patents in the UnitedStates, Canada, and Foreign Countries. .Messrs Munn <fcCo. also attend to the preparation of Caveats. Copyrightsfor Books. Labels, Reissues. Assignments, and Reportson Infringements of Patents. All business intrusted tothem is done with special care and promptness, on veryreasonable terms A pamphlet sent free of charge, on appjication, con-taining fuUinformation about Patents and how to pro-cure them; directions concerning
Scientific American Volume 59 Number 23 (December 1888) . thepreparation of Patent Drawings, Speciflcationa, and theprosecution of Application-j for Patents in the UnitedStates, Canada, and Foreign Countries. .Messrs Munn <fcCo. also attend to the preparation of Caveats. Copyrightsfor Books. Labels, Reissues. Assignments, and Reportson Infringements of Patents. All business intrusted tothem is done with special care and promptness, on veryreasonable terms A pamphlet sent free of charge, on appjication, con-taining fuUinformation about Patents and how to pro-cure them; directions concerning Labels, Copyrights,Designs, Patents, Appeals. Reissues, Infringements, As-signments, Rejected Cases, Hints on the Sale of Pa-tents, etc. We also swid, free of charge, a Synopsis of Foreign Pa-tent Laws, showing the cont and method of securinf;patents in all the principal countries of the world. miJNN & CO., SolicltorB ol Patents, 361 Broadway. New OFFICES.—No. 622 and 624 F Street, Pa-cific BnildiDK. near 7fb Street. Wasbington. D. OTTD GAS ENGINES. Over t2S,000 Sold. Horizontal .Gas Engines. Vertical .Gas Engines. Twin .Gas Engines. Combined | «„-^ ^SS^ combined |«-^°«X% OTTO GAS ENGINE WORKS, CHICAeO, PHILADELPHIA. New York Agency. 18 Vesey Street. ? d CO^^^\DCO Spectaclea, Barometeri,EkEO^^/~B9 PhotographUOutfitefnrAmateurs, Lantern SlidtS, Field Glassen, Slicroacopes, ( H. dk CO., Philadelphia, P».lUas. price list free. Send for Special Bargain Lists. NAVAL ARCHITECTURE.—AN IN- teresLing review, by Mr. R. Duncan, of the progressthat has been made In this branch of science duringthe last fifty years. Contained in Scientific Ameri-can Supplement, No. 589. Price 10 cents. To behad at this office and from all newsdealers. OIL ENGINES. For Printers, Steam Yachts,pampingwater, sawingwood,making ice-cream. Carpen-ters, Mechanics. 1 to S H. , Kerosene. No iIubC.^ utomatic in fuel and wa
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