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For the Inventor, By the Inventor

Camden, DE, United States of America

Doublethree, LLC


USPTO Granted Patents = 4

Trademarks = 1

Forward Citations = 3

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2 inventors (with patents filed for the assignee):

goldMedal Carl Winefordner (4 out of 52 patents)

silverMedal Frank Hermansen (4 out of 52 patents)


4 patents:

1. 12446647 - Incrementally adjustable and pivotable semi-rigid retention strap for a helmet (2025-10-21),
2. 12383013 - Helmet and chin strap (2025-08-12),
3. 12317947 - Helmet and chin strap (2025-06-03),
4. 11089831 - Incrementally adjustable and pivotable semi-rigid retention strap for a helmet (2021-08-17),
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USPTO Data Jan 1 1976 - Dec 16 2025

4 Patents

#2 in Camden, DE

#809 in Delaware

#59,029 in US

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Camden, DE, United States of America

Doublethree, LLC

Forward Citations = 3

2 inventors:

goldMedal Carl Winefordner (4 out of 52 patents)

silverMedal Frank Hermansen (4 out of 52 patents)

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