For the Inventor, By the Inventor

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Camden, DE, United States of America

Doublethree, LLC

USPTO Granted Patents = 5

Forward Citations = 9

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2 inventors (with patents filed for the assignee):

Carl Winefordner (5 out of 53 patents)

Frank Hermansen (5 out of 53 patents)

5 patents: Sort by Forward Citations

1. 12667155 - Helmet and chin strap (2026-06-30),

2. 12446647 - Incrementally adjustable and pivotable semi-rigid retention strap for a helmet (2025-10-21),

3. 12383013 - Helmet and chin strap (2025-08-12),

4. 12317947 - Helmet and chin strap (2025-06-03),

5. 11089831 - Incrementally adjustable and pivotable semi-rigid retention strap for a helmet (2021-08-17),

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USPTO Data Jan 1 1976 - Sep 29 2026

5 Patents

#2 in Camden, DE

#732 in Delaware

#51,545 in US

Camden, DE, United States of America

Doublethree, LLC

Forward Citations = 9

2 inventors:

Carl Winefordner (5 out of 53 patents)

Frank Hermansen (5 out of 53 patents)

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