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Class Information
Number: 178/6
Name: Telegraphy >

Sub-classes under this class:

Class Number Class Name Patents
178/ Systems 0
178/1 Miscellaneous 8
178/101 Keys 4
178/111 Tapes 0
178/114 Instrument tables 1
178/115 Learners' instruments 3
178/118 Receivers 3
178/2R Systems 43
178/70R Repeaters 33
178/74 Circuits 4
178/77 Combined instruments 1
178/79 Code transmitters 23

Patents under this class:

Patent Number Title Of Patent Date Issued

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