Scientific American, Vol. 20, No. 23 (June 1869)

1869 · 6 pictures

Patents · Dated · Engine · Boiler · Reissue · Steam engine · Apparatus · Fly wheel · Block tin · Patent office · Rolling mill · Letters patent · Heating surface · Turbine water · Beet root · Wire rope

Internet Archive · Public domain (published before 1931) · More from this library