Burger, Frederick W. US 1,901,629. Dual Wheel
name: label: Collection Manufacturer
content: Hoopes Brother & Darlington, Inc.
setName: label: See more items in
content: Hoopes Bro. & Darlington, Inc., Records
label: See more items in
content: Hoopes Bro. & Darlington, Inc., Records / Series 2: Patent Materials
unitdate: label: Date
content: 1933
container: label: Container
content: Box 5, Folder 20
dataSource: label: Archival Repository
content: Archives Center, National Museum of American History
objectType: label: Type
content: Archival materials