Number | Name | Date | Kind |
---|---|---|---|
3393253 | Wiesboeck | Jul 1968 | |
3476837 | Addor | Nov 1969 | |
3887657 | Battershell et al. | Jun 1975 | |
3957924 | Meyer et al. | May 1976 | |
3975522 | Bader | Aug 1976 | |
4139614 | Kilbourn et al. | Feb 1979 |
Number | Date | Country |
---|---|---|
952712 | Nov 1956 | DEX |
1139494 | Nov 1962 | DEX |
2114885 | Oct 1972 | DEX |
2260719 | Jun 1974 | DEX |
39-18119 | Jan 1964 | JPX |
216712 | Jul 1968 | SUX |
Entry |
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Abstract of Netherlands Patent 7216946 has one earlier application in Switzerland, same as U.S. Pat. No. 3,975,522, Amidines, pp. 405-408. |
Abstract of British Patent No. 1,048,314. |
Number | Date | Country | |
---|---|---|---|
Parent | 662743 | Mar 1976 |