Inventor Name
Elliptic Concave Leaf Spring Company
Repository
University of Illinois at Urbana-Champaign
University Archives
Room 19 Library
1408 Gregory Dr.
Urbana, IL 61801
217-333-0798
http://web.library.uiuc.edu/ahx/
Physical Description
1 v.
Summary
Records contain a contract between United States Concave Spring Company and Kreeps Brothers for rights to Edward Spauldings’s patent of February 18, 1881 for a new and improved concave spring.