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Ridgefield, CT, United States of America

Jacob C Krapowicz

Average Co-Inventor Count = 2.00

ph-index = 2

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 = 54

Jacob C Krapowicz ↔ William G Mader (2 patents)Jacob C KrapowiczJacob C Krapowicz (2 patents)William G MaderWilliam G Mader (11 patents)
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Inventor’s number of patents
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Strength of working relationships

Company Filing History:

1. Easco Corporation (2 from 8 patents)


2 patents:

1. D300296 - Ratchet wrench

2. D299206 - Combination wrench

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as of
12/10/2025
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