United States Patent (19) 11 Patent Number: 4,754,047 Kiernan Et Al
United States Patent (19) 11 Patent Number: 4,754,047 Kiernan et al. (45) Date of Patent: Jun. 28, 1988 54 PHENYLETHANOLAMINEDERIVATIVES 2,938,921 5/1960 Mills .................................... 564/363 AND ACID ADDITION SALTS THEREOF 3,236,892 2/1966 Petracek ............... ... 564/363 FOR ENHANCING THE GROWTH RATE OF 3,344,188 9/1967 Wollweber et al. ... 564/363 3,348,999 10/1967 Woroch et al........... ... 424/272 MEAT-PRODUCING ANIMALS AND/OR 3,536,712 10/1970 Keck et al........ ... 564/363 IMPROVING THE EFFICIENCY OF FEED 3,574,211 4/1971 Keck et al. ....... ... 564/363 UTILIZATION THEREBY 3,657,319 4/1972 Kaiser et al. .......................... 560/29 3,759,979 9/1973 Beregi et al...... ... 564/164 (75. Inventors: Jane A. Kiernan, Kendall Park; 3,869,492 3/1975 Biel et al. .............................. 560/29 Pamela K. Baker, Hopewell, both of 3,870,715 3/1975 Hansl............ ... 562/442 N.J. 3,896,141 7/1975 Keck et al. ....... ... 564/363 73) Assignee: American Cyanamid Company, 3,954,871 5/1976 Buu-Hoi et al. ..... ... 562/432 4,063,025 12/1977 Murakami et al. .. 560/29 Stamford, Conn. 4,119,710 10/1978 Engelhardt et al. ... 55.8/422 (21) Appl. No.: 679,714 4,163,060 7/1979 Hartog et al. ............ ... 564/165 4,179,442 12/1979 Köllensperger et al............ 424/272 22 Filed: Dec. 10, 1984 4,186,129 1/1980 Huth et al. .......................... 424/272 4,188,323 2/1980 Pestellini et al. ................... 424/272 Related U.S. Application Data 4,211,794 7/1980 Kraska ...............................
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