Transparencies of patents
name: label: Collection Donor
content: Poppen, Sherman, 1930-
setName: label: See more items in
content: Sherman Poppen Papers
label: See more items in
content: Sherman Poppen Papers / Series 2: Business and Legal Materials
unitdate: label: Date
content: undated
container: label: Container
content: Box 3, Folder 6
dataSource: label: Archival Repository
content: Archives Center, National Museum of American History
objectType: label: Type
content: Archival materials