Growing community of inventors

St. Francis, MN, United States of America

Roger W Wallin

Average Co-Inventor Count = 1.33

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 = 15

Roger W WallinJack W Gresham (1 patent)Roger W WallinRoger W Wallin (2 patents)Jack W GreshamJack W Gresham (5 patents)
..
Inventor’s number of patents
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Strength of working relationships

Company Filing History:

1. Other (1 from 832,812 patents)

2. Viking Engineering & Development, Incorporated (1 from 8 patents)


2 patents:

1. 5316200 - Automatic nailing head

2. 4867364 - Nail feeding apparatus for pallet-making machine

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as of
12/20/2025
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