For the Inventor, By the Inventor

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Madera, CA, United States of America

Span Construction & Engineering, Inc.

USPTO Granted Patents = 4

Trademarks = 2

Forward Citations = 6

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4 inventors (with patents filed for the assignee):

Charles E Wilson (4 out of 8 patents)

Alexander Mankin (4 out of 4 patents)

Ernest Brandi (4 out of 4 patents)

4. David John Blink (4 out of 4 patents)

4 patents: Sort by Forward Citations

1. 12398557 - Modular structural louver and methods of use (2025-08-26),

2. 12031321 - Modular structural louver and methods of use (2024-07-09),

3. 11643809 - Modular structural louver and methods of use (2023-05-09),

4. 11208801 - Modular structural louver and methods of use (2021-12-28),

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USPTO Data Jan 1 1976 - Oct 6 2026

4 Patents

#4 in Madera, CA

#14,041 in California

#60,597 in US

Madera, CA, United States of America

Span Construction & Engineering, Inc.

Forward Citations = 6

4 inventors:

Charles E Wilson (4 out of 8 patents)

Alexander Mankin (4 out of 4 patents)

Ernest Brandi (4 out of 4 patents)

4. David John Blink (4 out of 4 patents)

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