Frame for mounting "Direct Pull" magnets for telautograph, Gray's Duplicate Wiring Machine, Gray's self propeller telautograph, Improvement in Telautograph two wire system, Laminated magnet, method of putting train on escapement, Paper friction device,...
name: label: Collection Creator
content: Gray, Elisha, 1835-1901 (inventor)
setName: label: See more items in
content: Elisha Gray Collection
label: See more items in
content: Elisha Gray Collection / Series 11: Diagrams, Sketches, Drawings, News clippings and Explanatory Notes
container: label: Container
content: Box 10
dataSource: label: Archival Repository
content: Archives Center, National Museum of American History
objectType: label: Type
content: Archival materials