!DECEMBER 2 1876. For 1877. THIRTY-SECOND YEAR. Only $ a Year including Postage. Weekly. 52 Numbers a Year. Advatiatititto. Inside Page 76 rents a line. THE BEST AND MOST ECONOMICAL Boiler Feeder IS FRIEDMANN'S INJECTOR MAITUFACITIRED BY NATHAN & DREYFUS New York. —:o: Send for Circala!r. ALL THE LOFTS AND PART OF THE FIRST for SCIENTIFIC AMERICAN (5 PLEMENT Nos. 1 and 2 containing 5 engravings of the ' Compressed Air' Locomotives now in use in St. Gothard Tumid Works with dimensions. etc. [ESTABLISHED 1848. & Co.'sPatent Offices. The Oldest Agency for Soliciting Patent in the United
!DECEMBER 2 1876. For 1877. THIRTY-SECOND YEAR. Only $ a Year including Postage. Weekly. 52 Numbers a Year. Advatiatititto. Inside Page 76 rents a line. THE BEST AND MOST ECONOMICAL Boiler Feeder IS FRIEDMANN'S INJECTOR MAITUFACITIRED BY NATHAN & DREYFUS New York. —:o: Send for Circala!r. ALL THE LOFTS AND PART OF THE FIRST for SCIENTIFIC AMERICAN (5 PLEMENT Nos. 1 and 2 containing 5 engravings of the ' Compressed Air' Locomotives now in use in St. Gothard Tumid Works with dimensions. etc. [ESTABLISHED 1848. & Co.'sPatent Offices. The Oldest Agency for Soliciting Patent in the United States. 2'RIR2'1 YEARS' EXPERIENCIA. MORE PATENTS have been secured through this They employ as their assistants a corps of the most ex perienced men as examiners specification writers and draftsmen that can be found many of whom have been selected from the ranks of the Patent Office. SIXTY THOUSAND inventors have availed them selves of Mann & Co.'s serviees In examining their In ventions and procuring their patents. MUNN & CO. in connection with the publication of the SCIENTIFIC AMERICAN continue to examine in ventions confer with inventors prepare drawings spe ni the Patent Office paying the government fees end watch each case step by step while pending before the ex aminer. This is done through their branch office corner F and 7th streets Washington. They also prepare and file caveats procure design patents trademarks and re issues attend to rejected cases (prepared by the inventor ferences give written opinions on matter. of Infringe eign countries. A special notice Is made In the SCIENTIFIC AMERI CAN of all Inventions patented through this agencyvrith the name and residence of the patentee. Patent are of ten sold In part or whole to persona attracted to the In vention oy such notice. Patents obtained in Canada Ragland Fran ceBelgi um Germany Russia Mazda Spain Portugal the British Colonies and all other countries where patents are granted at prices greatly reduced from form
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