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Communications
Class Information
Number:
178/4.1
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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