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Communications
Class Information
Number:
340/691
Name:
Communications: electrical
>
Description:
Sub-classes under this class:
Class Number
Class Name
Patents
340/
Vehicle position indication (340/988)
0
340/
Land vehicle alarm or indicator (340/425.5)
0
340/
Condition responsive indicating system (340/500)
0
340/
Condition responsive indicating system (340/500)
0
340/
Condition responsive indicating system (340/500)
0
340/
Condition responsive indicating system (340/500)
0
340/
Condition responsive indicating system (340/500)
0
340/
Condition responsive indicating system (340/500)
0
340/
Condition responsive indicating system (340/500)
0
340/
Selective (340/825)
0
340/
Selective (340/825)
0
340/
Systems (340/286.01)
0
340/146.2
Digital comparator systems
410
340/286.01
Systems
118
340/310.11
Remote control over power line
499
340/384.1
Audible indication
234
340/407.1
Tactual indication
363
340/425.1
Repeater in unspecified type communications line or channel (e.g., relay station)
36
340/425.5
Land vehicle alarms or indicators
979
340/500
Condition responsive indicating system
328
340/815.4
Visual indication
427
340/825
Selective
203
340/850
Underwater
86
340/853.1
Wellbore telemetering or control (e.g., subsurface tool guidance, data transfer, etc.)
147
340/870.01
Continuously variable indicating (e.g., telemetering)
215
340/901
External condition vehicle-mounted indicator or alarm
458
340/906
Override of traffic control indicator by command transmitter
122
340/907
Traffic control indicator
364
340/932.2
Vehicle parking indicators
395
340/933
Vehicle detectors
658
340/944
Pedestrian guidance
83
340/945
Aircraft alarm or indicating systems
554
340/984
Watercraft alarm or indicating systems
164
340/988
Vehicle position indication
1,287
340/999
Miscellaneous
38
Patents under this class:
Patent Number
Title Of Patent
Date Issued
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