top | item 24749932 (no title) OptCohTomo | 5 years ago Where is Edwin Armstrong? discuss order hn newest segfaultbuserr|5 years ago Section 14, "Expanded Audion and Vacuum-tube Development (1917-1930)" [0], including Armstrong's original paper [1].[0] https://earlyradiohistory.us/sec014.htm[1] https://earlyradiohistory.us/1921sup.htm
segfaultbuserr|5 years ago Section 14, "Expanded Audion and Vacuum-tube Development (1917-1930)" [0], including Armstrong's original paper [1].[0] https://earlyradiohistory.us/sec014.htm[1] https://earlyradiohistory.us/1921sup.htm
segfaultbuserr|5 years ago
[0] https://earlyradiohistory.us/sec014.htm
[1] https://earlyradiohistory.us/1921sup.htm