Growing community of inventors

Racine, WI, United States of America

Paul Duff

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 = 16

Paul DuffMichael E Beach (1 patent)Paul DuffPaul Duff (1 patent)Michael E BeachMichael E Beach (4 patents)
..
Inventor’s number of patents
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Strength of working relationships

Company Filing History:

1. Racine Railroad Products, Inc. (1 from 24 patents)


1 patent:

1. 4765098 - Rail cutting apparatus

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12/19/2025
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