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3321745
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Information
Patent Grant
3321745
References
Source
Patent Number
3,321,745
Date Filed
Not available
Date Issued
Tuesday, May 23, 1967
57 years ago
CPC
H04Q3/521 - using semiconductors in the switching stages
G05F1/613 - using semiconductor devices in parallel with the load as final control devices
H01L27/00 - Devices consisting of a plurality of semiconductor or other solid state components formed in or on a common substrate
H01L27/1021 - including diodes only
H01L27/1027 - Thyristors
H03K17/70 - having two electrodes and exhibiting negative resistance
H03K17/72 - having more than two PN junctions having more than three electrodes having more than one electrode connected to the same conductivity region
H03K19/177 - arranged in matrix form
H03K19/17736 - Structural details of routing resources
H03K19/1778 - Structural details for adapting physical parameters
H03K19/17796 - for physical disposition of blocks
H03K23/002 - using semiconductor devices
H04M19/001 - Current supply source at the exchanger providing current to substations
H04Q3/00 - Selecting arrangements
US Classifications
340 - Communications: electrical
257 - Active solid-state devices
327 - Miscellaneous active electrical nonlinear devices, circuits, and systems
379 - Telephonic communications
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