- A. F. Peavey, from Tucson, Ariz.1
- Dencolo Corp., from Denver, Colo.1
- Germ-O-Tone Laboratories1
- Henry C. Haist & Co., from Kansas City, Mo.1
- J. H. Effenberg, from a place unknown in California.1
- Metabolic Research Laboratories, from Detroit, Mich.1
- Neoco Corp., from Los Angeles, Calif.1