Two Books of Patents of Dorr E. Felt
name: label: maker
content: Felt, D. E.
notes: label: Description
content: The first volume includes Dorr E. Felt's patents relating to the Comptometer, the second his patents relating to the Comptograph.
label: Location
content: Currently not on view
topic: label: Subject
content: Mathematics
setName: label: See more items in
content: Medicine and Science: Mathematics
label: See more items in
content: Adding Machines
creditLine: label: Credit Line
content: Gift of Mary Elizabeth Schmidt
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: 1994.3060.007
label: nonaccession number
content: 1994.3060
label: catalog number
content: 1994.3060.007
objectType: label: Object Name
content: books, set of
physicalDescription: label: Physical Description
content: paper (overall material)
label: Measurements
content: overall: 11.2 cm x 21.6 cm x 40.5 cm; 4 13/32 in x 8 1/2 in x 15 15/16 in