Number | Date | Country | Kind |
---|---|---|---|
20885 A/89 | Jun 1989 | ITX |
Number | Name | Date | Kind |
---|---|---|---|
3921005 | Watrous | Nov 1975 | |
3970900 | Hodgins | Jul 1976 | |
4005342 | Davis | Jan 1977 | |
4322770 | Sendelweck | Mar 1982 | |
4571656 | Ruckman | Feb 1986 | |
4589049 | Krumrein | May 1986 | |
4774620 | Enomoto et al. | Sep 1988 | |
4775912 | Menniti et al. | Oct 1988 | |
4870528 | Harford | Sep 1989 | |
4949212 | Lenz et al. | Aug 1990 |
Number | Date | Country |
---|---|---|
3310242 | Sep 1984 | DEX |
2512598 | Sep 1981 | FRX |
Entry |
---|
European Search Report No. EP 90 20 1475 date Sep. 19, 1990. |