Number | Date | Country | Kind |
---|---|---|---|
9008045 | Apr 1990 | GBX |
Number | Name | Date | Kind |
---|---|---|---|
2702677 | Replogle | Feb 1955 | |
3098631 | Hall et al. | Jul 1963 | |
3647168 | Eggert, Jr. et al. | Mar 1972 | |
3981465 | Sinnett et al. | Sep 1976 | |
4004763 | Bunnell, III et al. | Jan 1977 | |
4218035 | Jordan | Aug 1980 | |
4301983 | Horan | Nov 1981 | |
4667901 | Herndon | May 1987 | |
4749153 | Herndon | Jun 1988 | |
4787576 | McGrady et al. | Nov 1988 |
Number | Date | Country |
---|---|---|
1965978 | Jan 1980 | DEX |
Entry |
---|
European Search Report, Jul. 16, 1991, EP 91 10 4448. |