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United States Utility Patents
4,980,640 - 4,980,649
Previous 10 Next 10
| Number | | Title |
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4,980,640 |
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Method of and device for determining spectrum parameters of a spectrum related to spectroscopic signals |
|
4,980,641 |
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Method and apparatus of reducing magnetic hysteresis in MRI systems |
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4,980,642 |
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Detection of influx of fluids invading a borehole |
|
4,980,643 |
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Induction logging and apparatus utilizing skew signal measurements in dipping beds |
|
4,980,644 |
|
Earthquake detecting magnetometer with movable magnetic compass needle and method of using same |
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4,980,645 |
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Method for diagnosing an insulation deterioration of a power cable |
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4,980,646 |
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Impedance tomographic tactile sensor |
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4,980,647 |
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Arrangement for measuring and cancelling bias distortion in binary signals of the type not comprising any zero-frequency spectral components |
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4,980,648 |
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Local oscillator signal phase acquisition system for digital demodulator |
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4,980,649 |
|
Ultra efficient switching power amplifier |
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