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United States Utility Patents
4,769,840 - 4,769,849
Previous 10 Next 10
| Number | | Title |
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4,769,840 |
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Receiver for sound multiplex broadcast |
|
4,769,841 |
|
Receiver for compatible FM stereophonic system utilizing companding of difference signal |
|
4,769,842 |
|
Asymmetrical sideband transmission with pseudo-stereo effects |
|
4,769,843 |
|
Stereo signal reproducing system |
|
4,769,844 |
|
Voice recognition system having a check scheme for registration of reference data |
|
4,769,845 |
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Method of recognizing speech using a lip image |
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4,769,846 |
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Speech therapy variable code learning translator |
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4,769,847 |
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Noise canceling apparatus |
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4,769,848 |
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Electroacoustic network |
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4,769,849 |
|
Method and apparatus for separating overlapping patterns |
For U.S. patent law, rules, and procedures see MPEP.
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