Growing community of inventors

Snohomish, WA, United States of America

Roger Stark

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

Roger StarkChris W Lagerberg (2 patents)Roger StarkRoger Stark (2 patents)Chris W LagerbergChris W Lagerberg (9 patents)
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Inventor’s number of patents
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Strength of working relationships

Company Filing History:

1. Fluke Corporation (2 from 827 patents)


2 patents:

1. 8922231 - Method and apparatus for indexing an adjustable test probe tip

2. 8154316 - Method and apparatus for indexing an adjustable test probe tip

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as of
12/6/2025
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