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CA657348A
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Apparatus for making electron tubes
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CA676070A
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Method of making electron tubes
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CA626837A
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Electron tube socket
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CA574864A
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Ceramic electron tube
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CA444154A
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Ignition system
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CA603865A
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Electron tube
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CA632145A
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Grid structure and method of making the same
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CA578296A
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Beam type electron tube
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CA651174A
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Electron tube
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CA578218A
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Klystron and method of making the same
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CA633029A
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Tube having planar electrodes
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CA574424A
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Ceramic vacuum tube
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CA650841A
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Electron tube and socket therefor
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CA651844A
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Electron tube and socket therefor
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CA645066A
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Art of heating electron tube cathodes
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CA679475A
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Voltage-tunable magnetron
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CA477246A
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Electron tubes
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CA655042A
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Electron beam tube and magnetic circuitry therefor
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CA427376A
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Electronic tube
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CA647061A
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Electron tube
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