For the Inventor, By the Inventor

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Grand Rapids, MI, United States of America

Architectural Wall Systems, Inc.

USPTO Granted Patents = 3

Trademarks = 2

Forward Citations = 261

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4 inventors (with patents filed for the assignee):

Terry L Mitchell (3 out of 23 patents)

Lawrence J Spoolstra (2 out of 2 patents)

Robert J Poortvliet (1 out of 6 patents)

4. Glenn D Steil (1 out of 1 patent)

3 patents: Sort by Forward Citations

1. 4798035 - Floor-to-ceiling wall system (1989-01-17),

2. 4757657 - Floor-to-ceiling wall system (1988-07-19),

3. 4709517 - Floor-to-ceiling wall system (1987-12-01),

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USPTO Data Jan 1 1976 - Sep 15 2026

3 Patents

#134 in Grand Rapids, MI

#2,489 in Michigan

#73,706 in US

Grand Rapids, MI, United States of America

Architectural Wall Systems, Inc.

Forward Citations = 261

4 inventors:

Terry L Mitchell (3 out of 23 patents)

Lawrence J Spoolstra (2 out of 2 patents)

Robert J Poortvliet (1 out of 6 patents)

4. Glenn D Steil (1 out of 1 patent)

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