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For the Inventor, By the Inventor

Ann Arbor, MI, United States of America

Rudolph Bergsma Trust


USPTO Granted Patents = 3

Forward Citations = 23

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3 inventors (with patents filed for the assignee):

goldMedal Gary Don Cochran (2 out of 4 patents)

silverMedal Rosemary Bergsma, Legal Representative (1 out of 3 patents)

bronzeMedal Rudolph Bergsma (1 out of 24 patents)


3 patents:

1. 7673509 - Magnetically coupled drive for a sealed liquid level sender (2010-03-09),
2. 6990862 - Hermetic fuel level sender having tank bottom referencing (2006-01-31),
3. 6851315 - Hermetic fuel level sender (2005-02-08),
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USPTO Data Jan 1 1976 - Dec 16 2025

3 Patents

#195 in Ann Arbor, MI

#2,444 in Michigan

#72,011 in US

...
Ann Arbor, MI, United States of America

Rudolph Bergsma Trust

Forward Citations = 23

3 inventors:

goldMedal Gary Don Cochran (2 out of 4 patents)

silverMedal Rosemary Bergsma, Legal Representative (1 out of 3 patents)

bronzeMedal Rudolph Bergsma (1 out of 24 patents)

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