Inventions
Subject
Subject Source: Library of Congress Subject Headings
Scope Note: Here are entered works on original devices or processes. Works on fundamental technological improvements or changes in materials, production methods, processes, organization, or management which increase efficiency and production are entered under Technological innovations.
Found in 1 Collection or Record:
Yo-Yo Manufacturing Co. Subject File
Unprocessed Material
Identifier: 2024-009
Dates:
1928 - 1936
Found in:
Gledhill Library