|
Container
|
Title
|
|
Subseries: Dry cell storage battery
|
|
|
Research notes
|
|
|
Box
6
Folder
9
|
1927-1937
|
|
|
Box
7
Folder
1-2
|
, 1927-1937 (continued)
|
|
|
Notebook
|
|
|
Box
7
Folder
3
|
1931-1932
|
|
|
Box
7
Folder
4
|
1934-1936
|
|
|
Box
7
Folder
5
|
Correspondence and notes to patent attorneys, 1928-1931
|
|
|
Box
7
Folder
6
|
Newspaper clippings on Drumm battery, 1930-1934
|
|
|
Box
7
Folder
7
|
Patent applications/specifications, 1937
|
|
|
Box
7
Folder
8
|
Battery casings, undated
|
|
