Patent data (valve gears, track-layer machines, traction plows and threshing machines)
name: label: Collection Creator
content: Brown, Bernis B., 1888-1960
setName: label: See more items in
content: Bernis B. Brown Collection
label: See more items in
content: Bernis B. Brown Collection / Series 4: Research Notes
unitdate: label: Date
content: 1911-1958
container: label: Container
content: Box 7, Folder 1
dataSource: label: Archival Repository
content: Archives Center, National Museum of American History
objectType: label: Type
content: Archival materials