Case no. 72: Charles J. Keogan, Application materials, (no copy of patent) Patent no. #330749
name: label: Collection Creator
content: Clark, George Howard, 1881-1956
setName: label: See more items in
content: George H. Clark Radioana Collection
label: See more items in
content: George H. Clark Radioana Collection / Series G: Darby & Darby, Attorneys Patent Files
unitdate: label: Date
content: 1931-1933
container: label: Container
content: Box 500, Folder 1
dataSource: label: Archival Repository
content: Archives Center, National Museum of American History
objectType: label: Type
content: Archival materials