Trademarks = 3

Forward Citations = 39

Loading Chart...

6 inventors (with patents filed for the assignee):

Gardner Klaasen (3 out of 9 patents)

Robert C Caldwell, Jr (3 out of 3 patents)

Charles B Carter (3 out of 3 patents)

4. David Kersjes (3 out of 3 patents)

5. David Carl Swenson (3 out of 4 patents)

6. Gary L Kersting, Sr (1 out of 1 patent)

5 patents: Sort by Forward Citations

1. 6991306 - Carrousel file (2006-01-31),

2. 6951374 - Carrousel file cabinet (2005-10-04),

3. 6830159 - File cabinet container (2004-12-14),

4. 6588865 - Carrousel file cabinet (2003-07-08),

5. 6419332 - File cabinet (2002-07-16),

Harbor Steel & Supply Corporation is a leading provider of steel products and services in the Midwest. With over 40 years of experience, we offer an extensive inventory of carbon, stainless, and aluminum products for a wide range of industries. Our team of experts is dedicated to delivering high-quality materials, processing services, and custom solutions to meet our customers' needs.

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

Company Badge

USPTO Data Jan 1 1976 - Dec 9 2025

5 Patents

#27 in Muskegon, MI

#1,685 in Michigan

#50,165 in US

Muskegon, MI, United States of America

Harbor Steel & Supply Corporation