Hilpert's Patent
name: label: Series Creator
content: Warshaw, Isadore, 1900-1969
setName: label: See more items in
content: Warshaw Collection of Business Americana Subject Categories: Optics
label: See more items in
content: Warshaw Collection of Business Americana Subject Categories: Optics / Business Records, Marketing Material, and Other
unitdate: label: Date
content: undated
container: label: Container
content: Box 1, Folder 31
dataSource: label: Archival Repository
content: Archives Center, National Museum of American History
objectType: label: Type
content: Archival materials