Klaus, Fred K. US 1,816,380. 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: 1931
container: label: Container
content: Box 6, Folder 15
dataSource: label: Archival Repository
content: Archives Center, National Museum of American History
objectType: label: Type
content: Archival materials