Specifications forming part of Letters of Patents, April 7, 1885-Nov. 3, 1908; Drawings of Patents; xeroxed article from Scientific American Dec. 22, 1900
name: label: Collection Creator
content: Hammer, William J. (William Joseph), 1858-1934 (electrical engineer)
setName: label: See more items in
content: William J. Hammer Collection
label: See more items in
content: William J. Hammer Collection / Series 2: Edisonia / 2.13: Litigation Of Edison Patents
unitdate: label: Date
content: 1885-1908
container: label: Container
content: Box 39, Folder 3
dataSource: label: Archival Repository
content: Archives Center, National Museum of American History
objectType: label: Type
content: Archival materials