Number | Date | Country | Kind |
---|---|---|---|
3126119 | Jul 1981 | DEX |
Number | Name | Date | Kind |
---|---|---|---|
3921027 | Shelton et al. | Nov 1975 |
Number | Date | Country |
---|---|---|
1060923 | Jul 1959 | DEX |
Entry |
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K. K. N. Chang, "Electron Beam Amplifier", RCA Technical Notes, No. 393, Jun. 1960. |