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Summary

Fig 2 from US Patent 1330471 "High-Frequency Signalling", a Hartley Oscillator regenerative audion

Deutsch: Fig 2 aus US Patent 1330471 "High-Frequency Signalling", ein Hartley Oszillator RK-Audion

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Date

29/11/1915
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Source

USPTO
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Link

http://uspto.gov/
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Copyright info

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