COMMUNICATIONS RECEIVED. NEW ZOOMS AND PUBLICATIONS INDEX OF INVENTIONS Letters Patent of the United States were Granted in thc Week Ending March 8 1881 AND EACH BEARING THAT DATE. - English Patents Issued to Americans. PATENTS. MUNN & CO. Solicitors of Patents, scientific american, 1881-04-09
COMMUNICATIONS RECEIVED. NEW ZOOMS AND PUBLICATIONS INDEX OF INVENTIONS Letters Patent of the United States were Granted in thc Week Ending March 8 1881 AND EACH BEARING THAT DATE. - English Patents Issued to Americans. PATENTS. MUNN & CO. Solicitors of Patents, scientific american, 1881-04-09
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