For the Inventor, By the Inventor

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Warminster, PA, United States of America

Keystone L.e.d. Holdings LLC

USPTO Granted Patents = 2

Forward Citations = 22

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5 inventors (with patents filed for the assignee):

Richard A Frantz (2 out of 13 patents)

John R Bloom (2 out of 2 patents)

Walter M Bloom, Jr (2 out of 2 patents)

4. Daniel J Clark (2 out of 2 patents)

5. Craig S Cressman (1 out of 1 patent)

2 patents: Sort by Forward Citations

1. 8752978 - LED retrofit luminaire tubes (2014-06-17),

2. 8604712 - LED luminaires power supply (2013-12-10),

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USPTO Data Jan 1 1976 - Jan 6 2026

2 Patents

#26 in Warminster, PA

#3,355 in Pennsylvania

#92,696 in US

Warminster, PA, United States of America

Keystone L.e.d. Holdings LLC

Forward Citations = 22

5 inventors:

Richard A Frantz (2 out of 13 patents)

John R Bloom (2 out of 2 patents)

Walter M Bloom, Jr (2 out of 2 patents)

4. Daniel J Clark (2 out of 2 patents)

5. Craig S Cressman (1 out of 1 patent)

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