Number | Date | Country | Kind |
---|---|---|---|
2849184 | Nov 1978 | DEX |
Number | Name | Date | Kind |
---|---|---|---|
2241478 | Remington | May 1941 | |
2709324 | Hull | May 1955 | |
3685216 | Frey | Aug 1972 | |
3693301 | Lemmitre | Sep 1972 | |
3833230 | Noll | Sep 1974 | |
3861089 | England | Jan 1975 | |
3889431 | Johnson | Jun 1975 |
Number | Date | Country |
---|---|---|
1212215 | Mar 1966 | DEX |
1281584 | Oct 1968 | DEX |
1904798 | Apr 1970 | DEX |
Entry |
---|
IEEE Transactions on Electronic Devices, vol. ED-20, No. 4, Apr. 1973, pp. 347-352. _ |