Forward Citations = 94

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3 inventors (with patents filed for the assignee):

Oscar W Nyman (2 out of 2 patents)

William C Pierce (1 out of 43 patents)

Hector Lara (1 out of 1 patent)

4 patents: Sort by Forward Citations

1. 6234509 - Spring return coupler (2001-05-22),

2. 5382109 - Coupling device (1995-01-17),

3. 4157190 - Coupler with operable handle (1979-06-05),

4. 4133553 - Self-closing trailer coupler (1979-01-09),

The Hammerblow Corporation is a leading provider of industrial equipment and tools, known for their high-quality products and exceptional customer service. With a wide range of products from hammers to blowers, they have been serving their customers for over 50 years with a commitment to innovation and reliability.

Profile summary based on public USPTO records.

Company Badge

USPTO Data Jan 1 1976 - Oct 6 2026

4 Patents

#5 in Wausau, WI

#1,257 in Wisconsin

#60,597 in US

Wausau, WI, United States of America

The Hammerblow Corporation

Forward Citations = 94

3 inventors:

Oscar W Nyman (2 out of 2 patents)

William C Pierce (1 out of 43 patents)

Hector Lara (1 out of 1 patent)

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