Patents
name: label: Series Creator
content: Warshaw, Isadore, 1900-1969
setName: label: See more items in
content: Warshaw Collection of Business Americana Subject Categories: Office Equipment
label: See more items in
content: Warshaw Collection of Business Americana Subject Categories: Office Equipment / Genre
unitdate: label: Date
content: 1874-1916
container: label: Container
content: Box 7, Folder 2
dataSource: label: Archival Repository
content: Archives Center, National Museum of American History
objectType: label: Type
content: Archival materials
scopecontent: label: Scope and Contents
content: Marchant: Calculating-Machine, 1916. Clough: Improvement in Bill-Files, 1874. Clough: Improvement in Bill-Files, 1875. Clough: Binder or Holding Device, 1882. Schmidt: Improvement in Calendar and Pen-Rack, 1878.