Drawings of Patents; Specifications forming parts of Patents re motor, Electric Motor and generator, Electric apparatus for use in railway trains, Self-Regulating Dynamo; Electric-Generating System etc.
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: June 13, 1882-Oct. 19, 1915
container: label: Container
content: Box 39, Folder 2
dataSource: label: Archival Repository
content: Archives Center, National Museum of American History
objectType: label: Type
content: Archival materials