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![[Search a list of Patent Appplications for class 370]](../as.gif) Class 370 | MULTIPLEX COMMUNICATIONS |
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![[List of Patents for class 370 subclass 200]](../ps.gif) | 200 | PHANTOM |
| | 201 | CROSSTALK SUPPRESSION |
| | 202 | AMPLITUDE COMPRESSION OR EXPANSION |
| | 203 | GENERALIZED ORTHOGONAL OR SPECIAL MATHEMATICAL TECHNIQUES |
| | 204 |  Plural diverse modulation techniques |
| | 206 | Quadrature carriers |
| | 208 | Particular set of orthogonal functions |
| | 210 | Fourier transform |
| | 211 | Level multiplex |
| | 212 | PULSE WIDTH (PULSE DURATION) MODULATION |
| | 213 | PULSE POSITION MODULATION |
| | 214 | SIMULTANEOUS TELEGRAPHY AND TELEPHONY |
| | 215 | PHASE MODULATION |
| | 216 | FAULT RECOVERY |
| | 217 | Bypass an inoperative switch or inoperative element of a switching system |
| | 221 | Bypass an inoperative station |
| | 225 | Bypass an inoperative channel |
| | 229 | DATA FLOW CONGESTION PREVENTION OR CONTROL |
| | 230 | Control of data admission to the network |
| | 235 | Flow control of data transmission through a network |
| | 235.1 |  Using leaky bucket technique |
| | 236 | Including signaling between network elements |
| | 236.1 |  Using RM (Resource Management) cells |
| | 236.2 | Using OAM (Operation, Administration and Maintenance) cells |
| | 237 | Congestion based rerouting |
| | 238 | Least cost or minimum delay routing |
| | 239 | Using antijabber circuit |
| | 241 | DIAGNOSTIC TESTING (OTHER THAN SYNCHRONIZATION) |
| | 241.1 | Using OAM (Operation, Administration and Maintenance) cells |
| | 242 | Fault detection |
| | 246 | Of a repeater |
| | 248 | Path check |
| | 249 | Loopback |
| | 250 | Of a switching system |
| | 252 | Determination of communication parameters |
| | 254 | NETWORK CONFIGURATION DETERMINATION |
| | 259 | SPECIAL SERVICES |
| | 260 | Conferencing |
| | 261 | Technique for setting up a conference call |
| | 263 | Conferee signals combined or distributed via time channels |
| | 270 | Distribution of signal to multiple agent stations |
| | 271 | Special feature of multiplex telephone terminal |
| | 272 | SEXTUPLEX |
| | 273 | QUADRUPLEX |
| | 276 | DUPLEX |
| | 277 | Communication over free space |
| | 278 | Transmit/receive interaction control |
| | 279 | Duplex repeaters |
| | 280 | Time division |
| | 281 | Frequency division |
| | 282 | Transmit/receive interaction control |
| | 293 | Duplex repeaters or extenders |
| | 294 | Time division |
| | 295 | Frequency division |
| | 296 | Convertible to half duplex |
| | 297 | DIPLEX |
| | 298 | LOW SPEED ASYNCHRONOUS DATA SYSTEM (E.G., TELETYPEWRITER SERVICE) |
