Pennock, William. Patents
name: label: Collection Collector
content: Watkins, J. Elfreth (John Elfreth), 1852-1903
label: Collection Creator
content: White, John H., 1933-
setName: label: See more items in
content: Division of Transportation Railroad Reference Files
label: See more items in
content: Division of Transportation Railroad Reference Files / Series 6: Freights Cars
unitdate: label: Date
content: 1892, 1896
container: label: Container
content: Box 106, Folder 5
dataSource: label: Archival Repository
content: Archives Center, National Museum of American History
objectType: label: Type
content: Archival materials
scopecontent: label: Scope and Contents
content: File includes US Patent 466,624, for Metallic Cars (1892) and US Patent 571,884 for Metallic Car (1896)