RECENTLY PATENTED INVENTIONS. Pertaining to Apparel. Of Interest to Farmers. Of General Interest. Hardware. Heating and Lighting. Household Utilities. Machines and Mechanical Devices. Prime Movers and Their Accessories. Pertaining to Vehicles. the invention and date of this paper. HINTS TO CORRESPONDENTS. our information and not for publication. date of paper and page or number of question. Inquiries not answered in reasonable time should be repeated; correspondents will bear in mind that some answers require not a little research and though we endeavor to reply to all either by letter or in
RECENTLY PATENTED INVENTIONS. Pertaining to Apparel. Of Interest to Farmers. Of General Interest. Hardware. Heating and Lighting. Household Utilities. Machines and Mechanical Devices. Prime Movers and Their Accessories. Pertaining to Vehicles. the invention and date of this paper. HINTS TO CORRESPONDENTS. our information and not for publication. date of paper and page or number of question. Inquiries not answered in reasonable time should be repeated; correspondents will bear in mind that some answers require not a little research and though we endeavor to reply to all either by letter or in this department each must take his turn. tised in our columns will be furnished with addresses of houses manufacturing or carrying the same. rather than general interest cannot be expected without remuneration. Scientific American Supplements referred to may be had at the office. Price 10 cents each. marked or labeled. NEW BOOKS ETC. ELEMENTS OF ELECTRIC TRACTION FOR, 1907-12-21
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