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Creator
- Berl, Ernst, 1877-194620
- United States. Department of State7
- United States. War Department4
- National Inventors Council (U.S.)3
- Germany. Reichspatentamt2
- Green, J. C.2
- Gruhn, E. W.2
- Hackworth, Green Haywood, 1883-19732
- Ludwig-Georgs-Gymnasium (Darmstadt, Germany)2
- United States. Department of State. Division of European Affairs2
- United States. Patent Office2
- Bulletin-Index Co.1
- Butterworth, J. E.1
- Church, Samuel Harden, 1858-19431
- Corporation Service Company1
- Herring, Clyde L. (Clyde LaVerne), 1879-19451
- Jacobs, H. H.1
- Pell, Robert T., 1902-19691
- Robinson, P. M.1
- United States Civil Service Commission1