RECENTLY PATENTED INVENTIONS. Electrical Devices. Of Interest to Farmers. Of General Interest. Heating and Lighting. Household Utilities. Machines and Mechanical Devices. Railways and Their Accessories. Pertaining to Recreation. NEW BOOKS ETC. INDEX OF INVENTIONS For which Letters Patent of the United States were Issued for the Week Ending June 1 1909 AND EACH BEARING THAT DATE II, scientific american, -1909-06-11
RECENTLY PATENTED INVENTIONS. Electrical Devices. Of Interest to Farmers. Of General Interest. Heating and Lighting. Household Utilities. Machines and Mechanical Devices. Railways and Their Accessories. Pertaining to Recreation. NEW BOOKS ETC. INDEX OF INVENTIONS For which Letters Patent of the United States were Issued for the Week Ending June 1 1909 AND EACH BEARING THAT DATE II, scientific american, -1909-06-11
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