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BE488975A
(US08197722-20120612-C00042.png)
*
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1948-05-14 |
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1948-07-10 |
1954-11-02 |
Eitel Mccullough Inc |
Electron emitter for electron tubes
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1948-07-12 |
1950-10-10 |
Eitel Mccullough Inc |
Filamentary cathode for electron tubes
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1950-02-27 |
1953-01-13 |
Eitel Mccullough Inc |
Filament for electron tubes
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1950-05-12 |
1956-01-31 |
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Internally conducttvely coated |
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1950-12-18 |
1956-01-17 |
Krefft Hermann Eduard |
Electrode for gaseous discharge lamps
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1953-11-10 |
1960-01-26 |
Duro Test Corp |
Electrode for fluorescent lamps
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1954-04-15 |
1958-04-01 |
Machlett Lab Inc |
Filament structure
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1962-02-05 |
1966-03-01 |
Polaroid Corp |
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1981-12-31 |
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Raytheon Company |
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2012-01-27 |
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2012-04-26 |
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2013-10-28 |
2017-08-08 |
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2014-04-07 |
2016-10-11 |
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2014-04-10 |
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Double helix conductor with counter-rotating fields
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2015-02-20 |
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2015-06-09 |
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2015-09-01 |
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Medical Energetics Ltd. |
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