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Class Information
Number: 370/99
Name: Multiplex communications >
Description:

Sub-classes under this class:

Class Number	Class Name	Patents
370/	Pathfinding or routing	0
370/200	Phantom	45
370/201	Crosstalk suppression	172
370/202	Amplitude compression or expansion	50
370/203	Generalized orthogonal or special mathematical techniques	373
370/212	Pulse width (pulse duration) modulation	86
370/213	Pulse position modulation	56
370/214	Simultaneous telegraphy and telephony	6
370/215	Phase modulation	52
370/216	Fault recovery	658
370/229	Data flow congestion prevention or control	911
370/241	Diagnostic testing (other than synchronization)	563
370/254	Network configuration determination	985
370/259	Special services	209
370/272	Sextuplex	4
370/273	Quadruplex	4
370/276	Duplex	223
370/297	Diplex	44
370/298	Low speed asynchronous data system (e.g., teletypewriter service)	16
370/307	Trasmultiplexers	65
370/308	Resonant transfer techniques	8
370/309	Resonant transfer substitutes	0
370/310	Communication over free space	459
370/351	Pathfinding or routing	928
370/431	Channel assignment techniques	339
370/464	Communication techniques for information carried in plural channels	207
370/546	Miscellaneous	21
370/901	Wide area network	24
370/908	Local area network	52
370/912	Packet communications	66
370/914	Rate converter	34
370/915	Time division cellular radio systems	9
370/916	Multiplexer/demultiplexer	22