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Class Information
Number: 178/56
Name: Telegraphy >
Description:


Sub-classes under this class:

Class Number Class Name Patents
178/ Systems 0
178/1 Miscellaneous 6
178/101 Keys 3
178/111 Tapes 0
178/114 Instrument tables 1
178/115 Learners' instruments 3
178/118 Receivers 2
178/2R Systems 43
178/70R Repeaters 31
178/74 Circuits 4
178/77 Combined instruments 1
178/79 Code transmitters 22


Patents under this class:

Patent Number Title Of Patent Date Issued



 
 
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