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Back resistance control for junction semiconductor devices
US 3,007,090 A
Filed
: 09/04/1957
Issued
: 10/31/1961
Est. Priority Date
: 09/04/1957
Status: Expired due to Term
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Current Assignee
Richard F. Rutz
Original Assignee
Richard F. Rutz
Inventors
Rutz, Richard F.
Application Number
US03/681,986
Time in Patent Office
1,518 Days
Field of Search
US Class Current
257/565
CPC Class Codes
G01R 31/26
Testing of individual semic...
H01L 21/00
Processes or apparatus adap...
H01L 29/00
Semiconductor devices speci...
H01L 29/06
characterised by their shap...
H01L 29/0657
characterised by the shape ...
H01L 29/36
characterised by the concen...
H01L 29/73
Bipolar junction transistors
Y10T 428/24273
including aperture
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