VTC BIPOLAR CORPORATION, A CORP. OF MN

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
5227737 Method and apparatus for adjusting the pole positions of a differentiating amplifierExpiredDec 05, 90Jul 13, 93[H03G]
5132852 Read/write preamplifier with head isolationExpiredJun 28, 90Jul 21, 92[G22B]
4843432 Image recording apparatusExpiredJan 07, 87Jun 27, 89[G03B]

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