RECENTLY PATENTED INVENTIONS. Agricultural Implements. Electrical Apparatus. Engineering Improvements. Mechanical Devices. Miscellaneous Inventions. Designs. NEW BOOKS ETC. INDEX OF INVENTIONS For which Letters Patent of the United States were Issued for the Week Ending AND EACH BEARING THAT DATE., scientific american, 1900-03-11
RECENTLY PATENTED INVENTIONS. Agricultural Implements. Electrical Apparatus. Engineering Improvements. Mechanical Devices. Miscellaneous Inventions. Designs. NEW BOOKS ETC. INDEX OF INVENTIONS For which Letters Patent of the United States were Issued for the Week Ending AND EACH BEARING THAT DATE., scientific american, 1900-03-11
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