Number | Date | Country | Kind |
---|---|---|---|
1-324628 | Dec 1989 | JPX |
Number | Name | Date | Kind |
---|---|---|---|
3621214 | Romney et al. | Nov 1971 | |
4242937 | Pozar | Jan 1984 | |
4776253 | Downes | Oct 1988 | |
4805510 | De Dianous | Feb 1989 | |
4882965 | McClish | Nov 1989 | |
4968877 | McAvinney et al. | Nov 1990 | |
4980519 | Mathews | Dec 1990 |
Number | Date | Country |
---|---|---|
0286747 | Oct 1988 | EPX |
48-42963 | Dec 1973 | JPX |
63-40199 | Feb 1988 | JPX |
Entry |
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Ellis, "Calculus with Analytic Geometry", Harcourt Brace Jovanovich Inc., 1982, p. 458. |