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Class Information
Number: 307/650
Name: Electrical transmission or interconnection systems > With nonswitching means responsive to external nonelectrical condition
Description: Subject matter comprising an electronic circuit which has at least one nonswitching control component and is responsive to changes in external nonelectrical condition such as light, temperature, or flame and whereby an output current or voltage varies with variation of the external condition.


Sub-classes under this class:

Class Number Class Name Patents
307/653 Flame responsive (e.g., flame acts as a rectifier in circuit) 22
307/652 Responsive to approach or passage of an object 87
307/651 Temperature responsive 34


Patents under this class:
1 2

Patent Number Title Of Patent Date Issued
3999134 Method and apparatus for measuring the density of filling material in rod-shaped smokers' products taking into account the moisture of the filling material Dec. 21, 1976
3995221 Flame responsive system Nov. 30, 1976
3991375 Analog scanner Nov. 9, 1976
3986495 Optically excited diode current limiter Oct. 19, 1976
3978352 Control circuit Aug. 31, 1976
3967064 Low noise electronic circuit, transducer using the same, and method Jun. 29, 1976

1 2


 
 
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