D-199,302, floor polishing and scrubbing machine
name: label: Collection Creator
content: Singer Manufacturing Company
label: Collection Creator
content: Singer Company (The), (Fairfield, New Jersey)
setName: label: See more items in
content: Singer Industrial Design Collection
label: See more items in
content: Singer Industrial Design Collection / Series 4: Design Patents / 4.1: United States
unitdate: label: Date
content: 1964
container: label: Container
content: Box 18, Folder 46
dataSource: label: Archival Repository
content: Archives Center, National Museum of American History
objectType: label: Type
content: Archival materials