RECENTLY PATENTED INVENTIONS. Engineering. Railway Appliances. Electrical. Mechanical. Agricultural. Miscellaneous. NEW BOOKS AND PUBLICATIONS. SCIENTIFIC AMERICAN BUILDING EDITION. JULY (No. 45.), 1889-07-06
RECENTLY PATENTED INVENTIONS. Engineering. Railway Appliances. Electrical. Mechanical. Agricultural. Miscellaneous. NEW BOOKS AND PUBLICATIONS. SCIENTIFIC AMERICAN BUILDING EDITION. JULY (No. 45.), 1889-07-06
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