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Peterson; Douglas R. Patent Filings

Peterson; Douglas R.

Patent Applications and Registrations

Patent applications and USPTO patent grants for Peterson; Douglas R..The latest application filed is for "mr head preamplifier with output signal amplitude which is independent of head resistance".

Company Profile
0.4.0
  • Peterson; Douglas R. - Minnetonka MN
*profile and listings may contain filings by different individuals or companies with the same name. Review application materials to confirm ownership/assignment.
Patent Activity
PatentDate
MR head preamplifier with output signal amplitude which is independent of head resistance
Grant 5,914,630 - Peterson June 22, 1
1999-06-22
Preamplifier noise filtering circuit
Grant 5,534,818 - Peterson July 9, 1
1996-07-09
Write driver with H-switch synchronizing transistors
Grant 5,291,347 - Ngo , et al. March 1, 1
1994-03-01
Write circuit having current mirrors between predriver and write driver circuits for maximum head voltage swing
Grant 5,287,231 - Shier , et al. February 15, 1
1994-02-15

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