Negative Feedback Amplifier Patent Print
Patent No. US2102671 · 1937
Invented by Harold S. Black
Vintage 1937 patent drawing of the negative feedback amplifier by Harold S. Black. Museum-quality archival giclée print.
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About This Print
Vintage 1937 patent drawing of the negative feedback amplifier by Harold S. Black. Museum-quality archival giclée print.
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