Number | Date | Country | Kind |
---|---|---|---|
773154 | Sep 1977 | NOX |
Number | Name | Date | Kind |
---|---|---|---|
1375232 | Rush | Apr 1921 | |
2441759 | Gay | May 1948 | |
2886951 | Valembois | May 1959 |
Number | Date | Country |
---|---|---|
2507330 | Aug 1975 | DEX |
50-108437 | Aug 1975 | JPX |
52-97776 | Mar 1977 | JPX |
Entry |
---|
"Linear and Nonlinear Waves", G. B. Whitham, London 1973, Chapter 13, pp. 431-484. |
Number | Date | Country | |
---|---|---|---|
Parent | 942497 | Sep 1978 |