RECENTLY PATENTED INVENTIONS. Engineering. Hallway Appliances. Electrical. Miscellaneous. Designs. NEW BOOKS AND PUBLICATIONS. INDEX OF INVENTIONS For which Letters Patent of the United States were Granted FEBRUARY 23 1897 AND EACH BEARING THAT DATE., scientific american, 97-03-11
RECENTLY PATENTED INVENTIONS. Engineering. Hallway Appliances. Electrical. Miscellaneous. Designs. NEW BOOKS AND PUBLICATIONS. INDEX OF INVENTIONS For which Letters Patent of the United States were Granted FEBRUARY 23 1897 AND EACH BEARING THAT DATE., scientific american, 97-03-11
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