For the Inventor, By the Inventor

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Sturgeon Bay, WI, United States of America

Marine Travelift, Inc.

USPTO Granted Patents = 23

CIPO Patents = 1

Trademarks = 10

Forward Citations = 259

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11 inventors (with patents filed for the assignee):

Norbert W Lenius (10 out of 13 patents)

Jerry J Wierzba (9 out of 9 patents)

Thomas H Feider (9 out of 11 patents)

4. John E Braun (6 out of 7 patents)

5. Gerald P Lamer (6 out of 6 patents)

6. Timothy J Minkin (4 out of 4 patents)

7. Edward Lazzeroni (4 out of 5 patents)

8. Ronald Rhea Dir (4 out of 38 patents)

9. Richard A Stearn (2 out of 4 patents)

10. Robbie M Gunnlaugsson (1 out of 1 patent)

11. Arnold Petersen (1 out of 1 patent)

23 patents: Sort by Forward Citations

1. 9302891 - Powered auxiliary hoist mechanism for a gantry crane (2016-04-05),

2. 8215441 - Steering system for crane (2012-07-10),

3. 7926671 - Powered auxiliary hoist mechanism (2011-04-19),

4. 7913864 - Panel turner for a gantry crane (2011-03-29),

5. 7798274 - Steering system for crane (2010-09-21),

6. 7546929 - Powered auxiliary hoist mechanism for a gantry crane (2009-06-16),

7. 7520362 - Steering system for crane (2009-04-21),

8. 7451883 - Panel turner for gantry crane (2008-11-18),

9. 7252299 - Steering system for crane (2007-08-07),

10. 6675719 - Railroad car wheel handler and method (2004-01-13),

11. 6193086 - Gantry crane with improved manually variable controls for movable components (2001-02-27),

12. 5810183 - Gantry crane with elevating operator cab (1998-09-22),

13. 5715958 - Stabilizer for a gantry crane lift frame (1998-02-10),

14. D381178 - Operator cab for a crane (1997-07-15),

15. D376244 - Control panel for crane operator cab (1996-12-03),

Marine Travelift, Inc. is a leading manufacturer of mobile boat hoists and marine forklifts. With over 65 years of experience, they provide innovative and reliable solutions for the marine industry worldwide. Their products are known for their quality, durability, and efficiency, helping customers lift and transport boats of all sizes with ease.

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

Company Badge

USPTO Data Jan 1 1976 - Dec 30 2025

23 Patents

#2 in Sturgeon Bay, WI

#335 in Wisconsin

#13,949 in US

#26,820 in the World

Sturgeon Bay, WI, United States of America

Marine Travelift, Inc.

Forward Citations = 259

11 inventors:

Norbert W Lenius (10 out of 13 patents)

Jerry J Wierzba (9 out of 9 patents)

Thomas H Feider (9 out of 11 patents)

4. John E Braun (6 out of 7 patents)

5. Gerald P Lamer (6 out of 6 patents)

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