COMMUNICATIONS RECEIVED. NEW BOOKS AND PUBLICATIONS. INDEX OF INVENTIONS Letters Patent of the United States were Granted in the Week Ending AND EACH BEARING THAT DATE English Patents Issued to Americans., scientific american, 1881-07-09


COMMUNICATIONS RECEIVED. NEW BOOKS AND PUBLICATIONS. INDEX OF INVENTIONS Letters Patent of the United States were Granted in the Week Ending AND EACH BEARING THAT DATE English Patents Issued to Americans., scientific american, 1881-07-09


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