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Point contact negative resistance devices
United States Patent 2469569
US Patent References:
Electrical translating device utilizing silicon
2402839
Negative resistance loading
2373624
Thermistor as amplifier for low frequency signals
2360233
Electric wave system
2294908
Piezoelectric filter
2054757
Inventors:
Ohl, Russell S.
View Patent Images:
Download PDF 2469569
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Publication Date:
05/10/1949
Export Citation:
Click for automatic bibliography generation
Assignee:
BELL TELEPHONE LABOR INC
Primary Class:
331/107R
Other Classes:
29/599, 331/132, 327/571, 330/62, 333/217, 331/117R, 330/61A, 332/178, 257/41, 257/636, 310/318, 329/370, 310/328, 438/694, 330/250, 331/158, 29/825, 438/101
International Classes:
H01L21/00
;
H01L29/00
;
H03B7/06
;
H03C7/02
;
H03F3/12
;
H04B3/18
;
H03B7/00
;
H03C7/00
;
H03F3/04
;
H04B3/04
US Patent References:
1900045
Two-way negative resistance repeater
1900018
Device for controlling electric current
1875397
N/A
1810475
Receiver
1792781
Method of generating oscillations
1328326
Electric circuit
1096142
N/A
RE18579
N/A
Foreign References:
GB491603A
GB551209A