Artifact Details

Title

Early Calculating Devices - Patent Application for a Caluclating Machine

Catalog Number

102704297

Type

Still Image

Dimensions

overall: 4 in x 5 in

Description

B&W image of Sheet 1 of 7 sheets of a Patent Application for a Calculating Machine by C. Hamann. 1,011,617 Application Filed June 29,1910 Patented Dec. 12, 1911 It has three diagrams of the machine construction.

Category

Identification photograph

Credit

Courtesy of Gwen Bell

Lot Number

X7413.2015