For the Inventor, By the Inventor

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Racine, WI, United States of America

Jacobsen Manufacturing Company

USPTO Granted Patents = 13

Forward Citations = 167

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14 inventors (with patents filed for the assignee):

Neill C Woelffer (6 out of 6 patents)

Merlin H Gandrud (4 out of 4 patents)

Donald G Haffner (4 out of 4 patents)

4. Anthony J Saiia (3 out of 13 patents)

5. Lee L Karsten (2 out of 2 patents)

6. Harold John Jacoby (1 out of 1 patent)

7. Glenn Richard Hubbard (1 out of 2 patents)

8. Frank Allen Ecker (1 out of 2 patents)

9. Franklin A Ecker (1 out of 1 patent)

10. Merlin Howard Grandrud (1 out of 1 patent)

11. Neill C Woelfer (1 out of 1 patent)

12. Sahag C Akgulian (1 out of 1 patent)

13. Charles A Wuerker (1 out of 1 patent)

14. Gary C Steingraber (1 out of 1 patent)

13 patents: Sort by Forward Citations

1. D254547 - Lawn mower hand grip (1980-03-25),

2. 4152884 - Lawn mower with catcher accommodation (1979-05-08),

3. 4149363 - Lawn mower catcher (1979-04-17),

4. 4149362 - Combined lawn mower and grass catcher (1979-04-17),

5. 4135351 - Rotary lawn mower grass mulcher (1979-01-23),

6. 4134249 - Mulching type of lawn mower (1979-01-16),

7. D249519 - Combined lawn mower and grass catcher (1978-09-19),

8. 4108456 - Lawn mower handle mounting (1978-08-22),

9. 4108120 - Governor control for an internal combustion engine (1978-08-22),

10. 3992858 - Hydraulic system for controlling a gang of lawn mowers (1976-11-23),

11. 3990125 - Mobile sweeper (1976-11-09),

12. 3980068 - Gasoline powered machine having two electric circuit switches (1976-09-14),

13. 3973379 - Powered lawn mower hydraulic system (1976-08-10),

Jacobsen Manufacturing Company is a leading provider of high-quality turf maintenance equipment for golf courses, sports fields, and commercial grounds. With a focus on innovation and sustainability, Jacobsen offers a wide range of mowers, aerators, and utility vehicles to help customers achieve optimal results. With over 95 years of experience in the industry, Jacobsen is committed to providing top-notch products and exceptional service to its customers.

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

Company Badge

USPTO Data Jan 1 1976 - Dec 9 2025

13 Patents

#19 in Racine, WI

#533 in Wisconsin

#23,099 in US

#43,615 in the World

Racine, WI, United States of America

Jacobsen Manufacturing Company

Forward Citations = 167

14 inventors:

Neill C Woelffer (6 out of 6 patents)

Merlin H Gandrud (4 out of 4 patents)

Donald G Haffner (4 out of 4 patents)

4. Anthony J Saiia (3 out of 13 patents)

5. Lee L Karsten (2 out of 2 patents)

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