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| 4163121 | Radio channel control system for mobile radio telephone systems |
| 4162373 | Flexible acoustic coupler |
| 4160122 | Telephone earphone amplifier |
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| 4158106 | Telephone handset acoustic coupling cup |
| 4154980 | Noise blanker with variable rate-shut-off and/or variable blankin... |
| 4152546 | Ringer power generator circuit for carrier subscriber station ter... |
| 4152542 | Multichannel matrix logic and encoding systems |
| 4151371 | Remote meter reading apparatus comprising interphone means |
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| 4149031 | Multichannel matrix logic and encoding systems |
| 4147893 | Gauging system providing remote readout of liquid levels in gasol... |
| 4145572 | Power supply control circuit for subscriber carrier telephone sys... |
| 4144412 | Method of assigning a radio channel to a calling mobile body of m... |
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| 4144409 | Mobile radio communication control system for preventing erroneou... |
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| 4137429 | Digital dialers for use in the security field |
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| 4130732 | Remote alarm reset apparatus |
| 4130731 | Portable telephone system |
| 4127744 | Mobile radio communication system |
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| 4119815 | Central station system including secondary communication path ... |
| 4119800 | Radio-telephone interconnection system |
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| 4115659 | Electroacoustical telephone adapter |
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