Improvements to the production, regulation and utilization of electric currents of high frequency, and apparatus therefor
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GB013 - GB20981
No. | GB13 |
Patent | 20981 |
Year | 1896 |
Country | Great Britain |
Date of Application | September 22, 1896 |
Patent Title | Improvements to the production, regulation and utilization of electric currents of high frequency, and apparatus therefor |