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Class Information
Number: 340/539.22
Name: Communications: electrical > Condition responsive indicating system > With particular coupling link > Radio > Having plural distinct sensors (i.e., for surrounding conditions)
Description: Subject matter including multiple separate devices detecting environmental conditions.










Sub-classes under this class:

Class Number Class Name Patents
340/539.24 Diagnostic 75
340/539.25 Including video 100
340/539.23 Proximity 319


Patents under this class:
1 2 3 4 5 6 7 8 9 10 11

Patent Number Title Of Patent Date Issued
4162448 Radio signalling systems Jul. 24, 1979
4117405 Narrow-band radio communication system Sep. 26, 1978
4104618 Remote signaling system Aug. 1, 1978
4101872 Fire detection system Jul. 18, 1978
4095211 Coded electronic security system Jun. 13, 1978
4092643 Security device May. 30, 1978
4092642 Plural sensor monitoring and display device May. 30, 1978

1 2 3 4 5 6 7 8 9 10 11










 
 
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