For the Inventor, By the Inventor

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West Lafayette, IN, United States of America

Electronic Research Group, Inc.

USPTO Granted Patents = 2

Forward Citations = 426

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6 inventors (with patents filed for the assignee):

Paul Michael Lindberg (1 out of 12 patents)

Fred M Fehsenfeld (1 out of 4 patents)

Donald M Silva (1 out of 2 patents)

4. LeRoy F Silva (1 out of 2 patents)

5. David C Brewer (1 out of 1 patent)

6. Conrad Lindberg (1 out of 5 patents)

2 patents: Sort by Forward Citations

1. 4876638 - Low-noise switching power supply having variable reluctance transformer (1989-10-24),

2. 4860185 - Integrated uninterruptible power supply for personal computers (1989-08-22),

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USPTO Data Jan 1 1976 - Dec 30 2025

2 Patents

#34 in West Lafayette, IN

#1,317 in Indiana

#92,662 in US

West Lafayette, IN, United States of America

Electronic Research Group, Inc.

Forward Citations = 426

6 inventors:

Paul Michael Lindberg (1 out of 12 patents)

Fred M Fehsenfeld (1 out of 4 patents)

Donald M Silva (1 out of 2 patents)

4. LeRoy F Silva (1 out of 2 patents)

5. David C Brewer (1 out of 1 patent)

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