For the Inventor, By the Inventor

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Lexington, NE, United States of America

Orthman Manufacturing, Inc.

USPTO Granted Patents = 17

Trademarks = 7

Forward Citations = 409

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7 inventors (with patents filed for the assignee):

Henry K Orthman (11 out of 12 patents)

Michael E Frasier (3 out of 3 patents)

Stephen L Wahls (2 out of 6 patents)

4. Wendell Keith Vardeman (1 out of 3 patents)

5. Raymond Dean Vardeman (1 out of 3 patents)

6. Jay Stombaugh (1 out of 1 patent)

7. Wendell D Vardeman (1 out of 1 patent)

17 patents: Sort by Forward Citations

1. 6076613 - Forwardly-folding agricultural implement (2000-06-20),

2. 5664632 - Quick hitch guidance device (1997-09-09),

3. 5542190 - Bifold field marker (1996-08-06),

4. 5511623 - Quick hitch guidance device (1996-04-30),

5. 5408756 - Bifold field marker (1995-04-25),

6. 5307611 - Vehicle steering control system (1994-05-03),

7. 5207739 - Collapsible guide rod assembly for a tractor guidance system (1993-05-04),

8. 4588033 - Cotton root cutter and shredder (1986-05-13),

9. 4519623 - Tractor front end hitch (1985-05-28),

10. 4453601 - 180.degree. Folding tool bar (1984-06-12),

11. 4228860 - Apparatus for synchronizing the steering disc and row follower means of (1980-10-21),

12. 4184551 - Steering device for row crop cultivator (1980-01-22),

13. 4102406 - Ground conditioning device and method of conditioning soil (1978-07-25),

14. 4074766 - Floating folding tool bar having a lock means (1978-02-21),

15. 4065013 - Forklift attachment for moving three-point mounted equipment (1977-12-27),

Orthman Manufacturing, Inc. is a leading manufacturer of agricultural equipment, specializing in precision seedbed preparation and planting solutions. With over 50 years of experience, Orthman is dedicated to helping farmers improve productivity and efficiency on the field. Their innovative equipment and technology-driven solutions have made them a trusted partner for farmers worldwide.

This text is generated by artificial intelligence and may not be accurate.

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USPTO Data Jan 1 1976 - Jan 6 2026

17 Patents

#1 in Lexington, NE

#54 in Nebraska

#18,344 in US

#34,877 in the World

Lexington, NE, United States of America

Orthman Manufacturing, Inc.

Forward Citations = 409

7 inventors:

Henry K Orthman (11 out of 12 patents)

Michael E Frasier (3 out of 3 patents)

Stephen L Wahls (2 out of 6 patents)

4. Wendell Keith Vardeman (1 out of 3 patents)

5. Raymond Dean Vardeman (1 out of 3 patents)

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