. Scientific American Volume 35 Number 09 (August 1876). to Novem-ber 26,1*67, can be supplied with official copies at rea-sonable cost, the price depending upon the extent ofdrawings and length of specifications. Any patent issued since November 27,1867, at whichtime the Patent Office commenced printing the drawingsand specifications, may be had by remitting to this of-fice $1. A copy of the claims of any patent Issued since 1836 willbe furnished for $1. When ordering copies, please to remit for the same asabove, and state name of patentee, title of Invention,and date of patent. A pamphlet co
. Scientific American Volume 35 Number 09 (August 1876). to Novem-ber 26,1*67, can be supplied with official copies at rea-sonable cost, the price depending upon the extent ofdrawings and length of specifications. Any patent issued since November 27,1867, at whichtime the Patent Office commenced printing the drawingsand specifications, may be had by remitting to this of-fice $1. A copy of the claims of any patent Issued since 1836 willbe furnished for $1. When ordering copies, please to remit for the same asabove, and state name of patentee, title of Invention,and date of patent. A pamphlet containing the laws and full directions forobtaining United States patents sent free. A hand-somely bound Reference Book, gilt edges, contains 140pages and many engravings and tables Important to everypatentee and mechanic, and Is a useful handbook of ref-erence for everybody. Price 25 cents, mailed free. Address MUNN & CO.,Publishers SC ENTIFIC AMERICAN, 37 Park Row, N. Y. branch Office—Corner F and 7th Streets, Washi-ngton, D. C. PRICE ONLY $ NEW IMPROVED AIR RIFLE,Target Practice and Shooting Small Game. tar THE BEST AIR RIFLE MADE, ja Sent upon receipt of price, or C. O. i). Send for Circular. Address H. M. QUACKENBUSH, Mfe, Herkinwr, N. T. Also Manufacturer o f Superior Patented Steel Air Gun and Pistol Dartsof all si es, Slugs, &c. SCHLENKERS Stationary Die and Revolving-Die Bolt Cutters. THE BEST AND CHEAPEST MADE. HOWARD IRON WORKS, Buffalo, N. Y. VW Send for ^J Diamond Solid Emery Wheels. PKTCES—6x%. ; 8x1, $; lSxlK, $; 16x2, $;18x2, $; 20x2, $; 24x3, $42. All other sizes at pro-portionate prices. Fast cutting, free from glazing, theyare the best Solid Emery Wheels. Give dfam. of holesin your order for wheels. Emery Grinders unecualled t>>any in the world. Address AMERICAN TWIST DRILLCO., Woonsocket, R. I. To Engineers-A Valuable Investment. For Sale and to Rent—The Grand Rapids Iron Works,Grand Rapids, Mich, (establ
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