American Air Filter Co. Inc., air filter-electronic precipitron
name: label: Collection Author
content: Parke, Davis Company
setName: label: See more items in
content: Parke, Davis Research Laboratory Records.
label: See more items in
content: Parke, Davis Research Laboratory Records. / Series 9: Equipment Data Files
unitdate: label: Date
content: 1945
container: label: Container
content: Box 367, Folder 7
dataSource: label: Archival Repository
content: Archives Center, National Museum of American History
objectType: label: Type
content: Archival materials