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CIPO Patents = 2

Forward Citations = 119

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6 inventors (with patents filed for the assignee):

Steven W Wentworth (10 out of 75 patents)

Robert F Crane (7 out of 69 patents)

Jon A Haas (5 out of 7 patents)

4. Payce D Reynolds (2 out of 3 patents)

5. Mark D Randa (1 out of 36 patents)

6. Jon A Hass (1 out of 1 patent)

10 patents: Sort by Forward Citations

1. 5603383 - Reversible pneumatic ground piercing tool (1997-02-18),

2. 5505270 - Reversible pneumatic ground piercing tool (1996-04-09),

3. 5494116 - Pneumatic impact tool for pipe insertion (1996-02-27),

4. 5487430 - Pneumatic ground-piercing tool and body therefor (1996-01-30),

5. 5465797 - Pneumatic ground piercing tool with detachable head (1995-11-14),

6. 5440797 - Method for making a pneumatic ground piercing tool (1995-08-15),

7. 5337837 - Dual-diameter pneumatic ground piercing tool (1994-08-16),

8. 5317953 - Neutral-centering valve control system (1994-06-07),

9. 5199151 - Method for making a pneumatic ground piercing tool (1993-04-06),

10. 5025868 - Pneumatic ground piercing tool (1991-06-25),

Earth Tool Corporation is a leading provider of high-quality gardening and landscaping tools. Our products are designed to help individuals and professionals alike achieve their landscaping goals efficiently and effectively. With a commitment to sustainability and innovation, Earth Tool Corporation offers a wide range of eco-friendly tools and equipment to support a greener environment.

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

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USPTO Data Jan 1 1976 - Dec 9 2025

10 Patents

#6 in Oconomowoc, WI

#657 in Wisconsin

#28,938 in US

#54,238 in the World

Oconomowoc, WI, United States of America

Earth Tool Corporation