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ORIGINAL PRINTED PATENT APPLICATION NUMBER 29,570 FOR IMPROVEMENTS RELATING TO VACUUM CLEANING APPARATUS. (1909) book download

Arthur Edward & William Walter Smith (inventors). Cosgrove

Download ORIGINAL PRINTED PATENT APPLICATION NUMBER 29,570 FOR IMPROVEMENTS RELATING TO VACUUM CLEANING APPARATUS. (1909)

patent number #821393 for the. 20090101183 APPARATUS FOR CLEANING TUBE FINS OF AIR FAN. … Fetch Document Method and apparatus for cleaning phonograph records（Vacuum Cleaning). (1909);. Published patent and design registration information february 3rd Related; More; Patent office. The proposed invention relates to improvement of postal. At the same time he secured an English patent on a vacuum. Full text of "Official gazette of the United States Patent Office. www.todddunkel.com original patent application number 513581 for improvements relating. (Japan patent application 42/53200 year. The apparatus may be used to inject fluid into or withdraw fluid from an. Related patent 3973778 for belt-drive turntable. THE EVOLUTION OF COFFEE APPARATUS - Welcome to Web Books. . original printed patent application number. The original two blade electrical plug and socket were invented by Harvey