Box 13
Container
Contains 1 Collection or Record:
50th TR C Wing Training Directive (sections were written by Ralph Johnson), 1942
File — Box: 13, Folder: 3
Identifier: MSA 25, Series 2, Sub-Series 1, File 3
Scope and Contents
From the Sub-Series:
Among the items in this sub-series are documents concerning Johnson's patents and files from his patent attorney (1966-1975); Johnson's United States patent, 3,860,202; Method and Apparatus for Dispensing Granular Material from Aircraft, January 14, 1975;
and patent information on his "Map Vending Machine," 1975-1977.
Dates:
1942