Artifact Details

Title

Early Calculating Devices - Patent Application for a Calculating Machine

Catalog Number

102704296

Type

Still Image

Dimensions

overall: 5 in x 4 in

Description

B&W image of a Patent Application for a Calculating Machine by E. Selling No. 420,667 Patented Feb. 4, 1890.
It has one diagram showing how mechanism operates.

Category

Identification photograph

Lot Number

X7413.2015