0EARDSLEE'h PATENT PLANING Tongue 15tf ACHINERY.--8. C. HILLS No. 12 Platt-st. N Foreign and American Patent Agency TO CORRESPONDENTS. A Chapter of Suggestions dm. PATENT LAWS AND GIIIDE TO INVENTORSWe BACK NUMBERS AND VOLUMES—In reply to many PATENT CLAIMS—Persons desiring the claims of er journals. A GOOD CHANCE FOR MANUFACTURING Terms of Advertising. Advertisements exceeding 18 lines cannot be ad 'UNITED STATES PATENT OFFICE ei B. HUTCHINSON'S PATENT STAVE Oat, scientific american, 1853-08-13
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