Number | Name | Date | Kind |
---|---|---|---|
2744938 | Urban et al. | May 1956 | |
3207790 | Glew et al. | Sep 1965 | |
3217026 | Vertnik et al. | Nov 1965 | |
3453183 | Okubo | Jul 1969 | |
3723529 | Pitts et al. | Mar 1973 | |
3819710 | Jordan | Jun 1974 | |
4570019 | Gibson et al. | Feb 1986 | |
4731165 | Niebruegge et al. | Mar 1988 | |
4737243 | Siml et al. | Apr 1988 | |
4827037 | Doumaux, Jr. | May 1989 | |
4970344 | Keller | Nov 1990 | |
5019653 | Speranza et al. | May 1991 |
Number | Date | Country |
---|---|---|
0477593 | Jan 1992 | EPX |
1351050 | Dec 1971 | GBX |
Entry |
---|
Derwent Abstract 47683T, corresponding to Japanese Application 119,902 (1972). |