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Class Information
Number: 370/18
Name: Multiplex communications >
Description:

Sub-classes under this class:

Class Number	Class Name	Patents
370/	Pathfinding or routing	0
370/200	Phantom	49
370/201	Crosstalk suppression	199
370/202	Amplitude compression or expansion	56
370/203	Generalized orthogonal or special mathematical techniques	449
370/212	Pulse width (pulse duration) modulation	93
370/213	Pulse position modulation	59
370/214	Simultaneous telegraphy and telephony	8
370/215	Phase modulation	57
370/216	Fault recovery	776
370/229	Data flow congestion prevention or control	1,109
370/241	Diagnostic testing (other than synchronization)	687
370/254	Network configuration determination	1,262
370/259	Special services	235
370/272	Sextuplex	6
370/273	Quadruplex	4
370/276	Duplex	233
370/297	Diplex	46
370/298	Low speed asynchronous data system (e.g., teletypewriter service)	18
370/307	Trasmultiplexers	68
370/308	Resonant transfer techniques	8
370/309	Resonant transfer substitutes	0
370/310	Communication over free space	617
370/351	Pathfinding or routing	1,119
370/431	Channel assignment techniques	389
370/464	Communication techniques for information carried in plural channels	244
370/546	Miscellaneous	22
370/901	Wide area network	26
370/908	Local area network	60
370/912	Packet communications	70
370/914	Rate converter	34
370/915	Time division cellular radio systems	9
370/916	Multiplexer/demultiplexer	23