Growing community of inventors

Columbus, NE, United States of America

Duane B Overvaag

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 = 8

Duane B OvervaagCharles H Meis (2 patents)Duane B OvervaagDuane B Overvaag (2 patents)Charles H MeisCharles H Meis (19 patents)
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Inventor’s number of patents
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Strength of working relationships

Company Filing History:

1. Lindsay Manufacturing Company (2 from 27 patents)


2 patents:

1. 4693425 - Drive for movable irrigation system and the like

2. 4618102 - Drive for movable irrigation system and the like

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as of
12/19/2025
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