RECENTLY PATENTED INVENTIONS. Agricultural Implements. Rallway-Appliances. Miscellaneous Inventions. 'Ziusinesss an 'Werzonal. INDEX OF INVENTIONS For which Letters Patent of the United States were issued for the Week Ending NOVEBER 21 1899., scientific american, 1899-12-11
RECENTLY PATENTED INVENTIONS. Agricultural Implements. Rallway-Appliances. Miscellaneous Inventions. 'Ziusinesss an 'Werzonal. INDEX OF INVENTIONS For which Letters Patent of the United States were issued for the Week Ending NOVEBER 21 1899., scientific american, 1899-12-11
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