W. Broertjes. Method of Maintaining Secrecy in the Transmission of Wireless Telegraphic Messages (US Patent 1,869,659)
name: label: Collection Composer
content: Antheil, George, 1900-1959
label: Collection Actor
content: Lamarr, Hedy (1914-2000)
setName: label: See more items in
content: Hedy Lamarr and George Antheil Invention Papers
label: See more items in
content: Hedy Lamarr and George Antheil Invention Papers / Series 1: Invention Papers
unitdate: label: Date
content: 1932-08-02
container: label: Container
content: Box 1, Folder 2
dataSource: label: Archival Repository
content: Archives Center, National Museum of American History
objectType: label: Type
content: Archival materials
scopecontent: label: Scope and Contents
content: One drawing with annotation in red pencil.