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For the Inventor, By the Inventor

Wahpeton, ND, United States of America

Wil-rich, LLC


USPTO Granted Patents = 3

Forward Citations = 96

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7 inventors (with patents filed for the assignee):

goldMedal Sherman H Quanbeck (2 out of 6 patents)

silverMedal Alan L Redman (1 out of 2 patents)

bronzeMedal Lawrence F Bernard (1 out of 2 patents)

4.  Dan P Steinberger (1 out of 2 patents)

5.  Lesley L Willemssen (1 out of 1 patent)

6.  David P Desautels (1 out of 1 patent)

7.  Albert O Ringdahl (1 out of 1 patent)


3 patents:

1. 7021396 - Suspension system for a three-point apparatus (2006-04-04),
2. 4312621 - Auger for filling seeder on tool bar carrier (1982-01-26),
3. 4296695 - Seeding device with air distribution system (1981-10-27),
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USPTO Data Jan 1 1976 - Dec 16 2025

3 Patents

#3 in Wahpeton, ND

#72 in North Dakota

#71,958 in US

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Wahpeton, ND, United States of America

Wil-rich, LLC

Forward Citations = 96

7 inventors:

goldMedal Sherman H Quanbeck (2 out of 6 patents)

silverMedal Alan L Redman (1 out of 2 patents)

bronzeMedal Lawrence F Bernard (1 out of 2 patents)

4.  Dan P Steinberger (1 out of 2 patents)

5.  Lesley L Willemssen (1 out of 1 patent)

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