This is a divisional of co-pending application Ser. No. 07/738,961, filed on Aug. 1, 1991 now U.S. Pat. No. 5,208,247.
Number | Name | Date | Kind |
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3655675 | Carabates | Apr 1972 | |
3679690 | Carabates | Jul 1972 | |
3763168 | Carabates | Oct 1973 | |
4501746 | Krumkalns | Feb 1985 | |
4916145 | Tilley et al. | Apr 1990 |
Entry |
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Chemical Abstracts, vol. 55, No. 14, Abstract 13423(e) & (f), Jul. 10, 1961, Kost et al. |
Chemical Abstracts, vol. 56, No. 5, Abstract 5921(h) & (i), Mar. 5, 1962, Carelli et al. |
Chemical Abstracts, vol. 94, No. 21, Abstract 174821z, p. 702, May 25, 1981, Zee et al. |
Number | Date | Country | |
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Parent | 738961 | Aug 1991 |