Growing community of inventors

Rochester, MI, United States of America

Charles Lee Dardas

Average Co-Inventor Count = 2.00

ph-index = 1

The patent ph-index is calculated by counting the number of publications for which an author has been cited by other authors at least that same number of times.

Forward Citations = 7

Charles Lee DardasRobert E Stewart (3 patents)Charles Lee DardasCharles Lee Dardas (3 patents)Robert E StewartRobert E Stewart (33 patents)
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Inventor’s number of patents
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Strength of working relationships

Company Filing History:

1. Other (2 from 832,880 patents)

2. Alpha Stamping Company (1 from 7 patents)


3 patents:

1. 9970471 - Direct tension indicator plate and assembly

2. 9239071 - Direct tension indicator plate and assembly

3. 7658579 - Nut and retainer fastener assembly

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as of
1/5/2026
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