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Primary view of Key-Board Attachment for Pianos.
Osborn, Enoch L. S.
February 12, 1889
Primary view of Loose-Leaf Binder
Owen, Thomas
January 4, 1906
Primary view of Pictorial Firmament Machine.
Jones, Oliver Pinkney
April 4, 1911
Primary view of Educational Device
Fanning, Sam H.
September 10, 1912
Primary view of Educational Device.
Fanning, Sam H.
November 4, 1913
Primary view of Educational Appliance.
Macfarlane, Alexander
September 26, 1893
Primary view of Educational Device.
Williams, Willoughby Columbus
February 10, 1903
Primary view of Combined Educational Chart, Drawing Board, and Writing-Desk
Henderson, George A.
November 26, 1907
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