RECENTLY PATENTED INVENTIONS. Agricultural Implements. Electrical Apparatus. Engineering Improvements. Mechanical Devices. Railway-Contrivances. Miscellaneous Inventions. Designs. 'Zuzinessis and 'Wersanal. TO INVENTORS. INDEX OF INVENTIONS For which Letters Patent of the United States were Issued for the Week Ending MARCH 27 l000. AND EACH BEARING THAT DA1E., scientific american, 1900-04-11
RECENTLY PATENTED INVENTIONS. Agricultural Implements. Electrical Apparatus. Engineering Improvements. Mechanical Devices. Railway-Contrivances. Miscellaneous Inventions. Designs. 'Zuzinessis and 'Wersanal. TO INVENTORS. INDEX OF INVENTIONS For which Letters Patent of the United States were Issued for the Week Ending MARCH 27 l000. AND EACH BEARING THAT DA1E., scientific american, 1900-04-11
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