Internal-external flexible coupling, pat. 1,898,496, ser. 447,503, Can. 389,320, D.B.P., 1932 - 1934

Internal-external flexible coupling, pat. 1,898,496, ser. 447,503, Can. 389,320, D.B.P., 1932 - 1934, Box: 17, Folder: 14. Morse Chain Company records, 6889. Division of Rare and Manuscript Collections. https://archives.library.cornell.edu/repositories/2/archival_objects/964655 Accessed February 15, 2026.