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For the Inventor, By the Inventor

Maple Grove, MN, United States of America

Geospan Corporation


USPTO Granted Patents = 3


Trademarks = 3

Forward Citations = 449

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8 inventors (with patents filed for the assignee):

goldMedal Theodore M Lachinski (2 out of 2 patents)

silverMedal Stephen Boggs (2 out of 2 patents)

bronzeMedal Jeffrey M Setterholm (2 out of 10 patents)

4.  Nishalan Nair Revi Andran (1 out of 1 patent)

5.  Grant W Effertz (1 out of 1 patent)

6.  John W Longfellow (1 out of 1 patent)

7.  Paul M Blais (1 out of 1 patent)

8.  Louis S Ptacek (1 out of 1 patent)


3 patents:

1. 11200353 - Geographic information system for creating 3D structure models using perspective view drafting (2021-12-14),
2. 7233691 - Any aspect passive volumetric image processing method (2007-06-19),
3. 5633946 - Method and apparatus for collecting and processing visual and spatial (1997-05-27),
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USPTO Data Jan 1 1976 - Dec 16 2025

3 Patents

#41 in Maple Grove, MN

#1,944 in Minnesota

#71,953 in US

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Maple Grove, MN, United States of America

Geospan Corporation

Forward Citations = 449

8 inventors:

goldMedal Theodore M Lachinski (2 out of 2 patents)

silverMedal Stephen Boggs (2 out of 2 patents)

bronzeMedal Jeffrey M Setterholm (2 out of 10 patents)

4.  Nishalan Nair Revi Andran (1 out of 1 patent)

5.  Grant W Effertz (1 out of 1 patent)

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